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Aiwang Duan
Key Laboratory of Crop Water Use and Regulation, Farmland Irrigation Research Institute, Chinese Academy of Agriculture Sciences, Ministry of Agriculture and Rural Affairs, Xinxiang 453003, China

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Journal article
Published: 28 July 2021 in Water
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The North China Plain is an important irrigated agricultural area in China. However, the effects of irrigation management on carbon emission are not well documented in this region. Due to the uneven seasonal distribution of rainfall, irrigation is mainly concentrated in the winter wheat growing season in the North China Plain. In this study, we estimated CO2 emission and soil CH4 uptake from winter wheat fields with different irrigation methods and scheduling treatments using the static chamber-gas chromatography method from April to May 2017 and 2018. Treatments included three irrigation methods (surface drip, sprinkler, and border) and three irrigation scheduling levels that initiated as soon as the soil moisture drained to 50%, 60%, and 70% of the field capacity for a 0–100 cm soil profile were tested. The results showed that both the irrigation methods and scheduling significantly influenced (p< 0.05) the cumulative CO2 and CH4 emission, grain yield, global warming potential (GWP), GWP Intensity (GWPI), GWPI per unit irrigation applied, and water use efficiency (WUE). Compared to 60% and 70% FC, 50% FC irrigation scheduling de-creased accumulated CH4 uptake 26.8–30.3% and 17.8–25.4%, and reduced accumulated CO2 emissions 7.0–15.3% and 12.6–19.4%, respectively. Conversely, 50% FC reduced GWP 6.5–13.3% and 12.5–19.4% and lower grain yield 10.4–19.7% and 8.5–16.6% compared to 60% and 70% FC irrigation scheduling in 2017 and 2018, respectively. Compared to sprinkler irrigation and border irrigation, drip irrigation at 60% FC increased the accumulated CH4 uptake 11.3–12.1% and 1.9–5.5%, while reduced the accumulated CO2 emissions from 7.5–8.8% and 10.1–12.1% in 2017 and 2018, respectively. Moreover, drip irrigation at 60% FC increased grain yield 5.2–7.5% and 6.3–6.8%, WUE 0.9–5.4% and 5.7–7.4%, and lowered GWP 8.0–9.8% and 10.1–12.0% compared to sprinkler and border irrigation in 2017 and 2018, respectively. The interaction of irrigation scheduling and irrigation methods significantly impacted accumulated CH4 uptake, cumulative CO2 amount, and GWP in 2018 only while grain yield and WUE in the entire study. Overall, drip irrigation at 60% FC is the optimal choice in terms of higher grain yield, WUE, and mitigating GWP and GWPI from winter wheat fields in North China Plain.

ACS Style

Faisal Mehmood; Guangshuai Wang; Yang Gao; Yueping Liang; Muhammad Zain; Shafeeq Rahman; Aiwang Duan. Impacts of Irrigation Managements on Soil CO2 Emission and Soil CH4 Uptake of Winter Wheat Field in the North China Plain. Water 2021, 13, 2052 .

AMA Style

Faisal Mehmood, Guangshuai Wang, Yang Gao, Yueping Liang, Muhammad Zain, Shafeeq Rahman, Aiwang Duan. Impacts of Irrigation Managements on Soil CO2 Emission and Soil CH4 Uptake of Winter Wheat Field in the North China Plain. Water. 2021; 13 (15):2052.

Chicago/Turabian Style

Faisal Mehmood; Guangshuai Wang; Yang Gao; Yueping Liang; Muhammad Zain; Shafeeq Rahman; Aiwang Duan. 2021. "Impacts of Irrigation Managements on Soil CO2 Emission and Soil CH4 Uptake of Winter Wheat Field in the North China Plain." Water 13, no. 15: 2052.

Journal article
Published: 03 March 2021 in Sustainability
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Sound irrigation and nitrogen management strategies are necessary to achieve sustainable yield and water use efficiency of winter wheat in the North China Plain (NCP). The coupled effects of irrigation scheduling and the nitrogen application mode (NAM) on winter wheat growth, yield and water use efficiency under drip irrigation were evaluated with a two-year field experiment, which consisted of three irrigation scheduling levels (ISLs) (irrigating when soil water consumption (SWC) reached 20, 35 and 50 mm, referred as I20, I35 and I50, respectively) and three nitrogen application modes (NAMs) (ratio of basal application and topdressing as 50:50, 25:75 and 0:100, referred as N50:50, N25:75 and N0:100, respectively). The experimental results showed that irrigating winter wheat at ISL I35 substantially (p < 0.05) improved the grain yield by 15.89%, 3.32% and 14.82%, 4.31% and water use efficiency (WUE) by 5.23%, 16.03% and 5.26%, 12.36%, compared with those at ISL I20 and I50 in 2017–2018 and 2018–2019 growing seasons, respectively. NAM N25:75 appeared very beneficial in terms of grain yield, yield components and WUE as compared to other NAM levels. The maximum grain yield (8.62 and 9.40 t ha−1) and water use efficiency (1.88 and 2.09 kg m−3) were achieved in treatment I35N25:75 in two growing seasons over those in other treatments. The results in this study may deliver a scientific basis for irrigation and nitrogen fertilization management of the drip-irrigated winter wheat production in the NCP.

ACS Style

Muhammad Zain; Zhuanyun Si; Sen Li; Yang Gao; Faisal Mehmood; Shafeeq-Ur Rahman; Abdoul Mounkaila Hamani; Aiwang Duan. The Coupled Effects of Irrigation Scheduling and Nitrogen Fertilization Mode on Growth, Yield and Water Use Efficiency in Drip-Irrigated Winter Wheat. Sustainability 2021, 13, 2742 .

AMA Style

Muhammad Zain, Zhuanyun Si, Sen Li, Yang Gao, Faisal Mehmood, Shafeeq-Ur Rahman, Abdoul Mounkaila Hamani, Aiwang Duan. The Coupled Effects of Irrigation Scheduling and Nitrogen Fertilization Mode on Growth, Yield and Water Use Efficiency in Drip-Irrigated Winter Wheat. Sustainability. 2021; 13 (5):2742.

Chicago/Turabian Style

Muhammad Zain; Zhuanyun Si; Sen Li; Yang Gao; Faisal Mehmood; Shafeeq-Ur Rahman; Abdoul Mounkaila Hamani; Aiwang Duan. 2021. "The Coupled Effects of Irrigation Scheduling and Nitrogen Fertilization Mode on Growth, Yield and Water Use Efficiency in Drip-Irrigated Winter Wheat." Sustainability 13, no. 5: 2742.

Journal article
Published: 29 November 2020 in Plants
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High planting density and nitrogen shortage are two important limiting factors for crop yield. Phytohormones, abscisic acid (ABA), and jasmonic acid (JA), play important roles in plant growth. A pot experiment was conducted to reveal the role of ABA and JA in regulating leaf gas exchange and growth in response to the neighborhood of plants under different nitrogen regimes. The experiment included two factors: two planting densities per pot (a single plant or four competing plants) and two N application levels per pot (1 and 15 mmol·L−1). Compared to when a single plant was grown per pot, neighboring competition decreased stomatal conductance (gs), transpiration (Tr) and net photosynthesis (Pn). Shoot ABA and JA and the shoot-to-root ratio increased in response to neighbors. Both gs and Pn were negatively related to shoot ABA and JA. In addition, N shortage stimulated the accumulation of ABA in roots, especially for competing plants, whereas root JA in competing plants did not increase in N15. Pearson’s correlation coefficient (R2) of gs to ABA and gs to JA was higher in N1 than in N15. As compared to the absolute value of slope of gs to shoot ABA in N15, it increased in N1. Furthermore, the stomatal limitation and non-stomatal limitation of competing plants in N1 were much higher than in other treatments. It was concluded that the accumulations of ABA and JA in shoots play a coordinating role in regulating gs and Pn in response to neighbors; N shortage could intensify the impact of competition on limiting carbon fixation and plant growth directly.

ACS Style

Shuang Li; Abdoul Kader Mounkaila Hamani; Zhuanyun Si; Yueping Liang; Yang Gao; Aiwang Duan. Leaf Gas Exchange of Tomato Depends on Abscisic Acid and Jasmonic Acid in Response to Neighboring Plants under Different Soil Nitrogen Regimes. Plants 2020, 9, 1674 .

AMA Style

Shuang Li, Abdoul Kader Mounkaila Hamani, Zhuanyun Si, Yueping Liang, Yang Gao, Aiwang Duan. Leaf Gas Exchange of Tomato Depends on Abscisic Acid and Jasmonic Acid in Response to Neighboring Plants under Different Soil Nitrogen Regimes. Plants. 2020; 9 (12):1674.

Chicago/Turabian Style

Shuang Li; Abdoul Kader Mounkaila Hamani; Zhuanyun Si; Yueping Liang; Yang Gao; Aiwang Duan. 2020. "Leaf Gas Exchange of Tomato Depends on Abscisic Acid and Jasmonic Acid in Response to Neighboring Plants under Different Soil Nitrogen Regimes." Plants 9, no. 12: 1674.

Journal article
Published: 30 October 2020 in Agricultural Water Management
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Improper application of nitrogen fertilizer for winter wheat production in the North China Plain (NCP) limits N use efficiency and increases the risk of non-point pollution. Crop simulation models may help with the assessment of N fertilizer management, to improve nitrogen use efficiency and to mitigate environmental pollution. In this study, the DSSAT-CERES-Wheat model was calibrated and validated with two-year field experiment, which coupled with five N rates (0, 120, 180, 240, and 300 kg ha−1) and three irrigation levels (40, 30, and 20 mm per irrigation) under drip irrigation. The calibrated DSSAT-CERES-Wheat model performed well in simulating the anthesis date (nRMSE=1.47%, d=0.89), maturity date (nRMSE=0.97%, d=0.92), shoot biomass (nRMSE=10.97%, d=0.92), grain yield (nRMSE=6.19%, d=0.96), and actual evapotranspiration (nRMSE=9.96%, d=0.76) of drip-irrigated winter wheat in two years. The calibrated model was subsequently used to evaluate drip-irrigated winter wheat production in response to six N rates (0, 120, 180, 240, 300, and 360 kg ha−1) under 40 meteorological scenarios, and the results showed that grain yields, water use efficiency, irrigation water use efficiency, and net margins increased with increasing N application rates until it reached 180 kg ha−1. Above 180 kg ha−1, negligible changes were measured in these values as the N rate increased. The nitrogen physiological efficiency and nitrogen partial factor productivity were greatly improved at a N rate of 180 kg ha−1, compared with those at a N rate of 240, 300, and 360 kg ha−1. Consequently, N rate of 180 kg ha−1 was the optimal nitrogen application rate for drip-irrigated winter wheat production. These results may provide a scientific basis for nitrogen management of drip-irrigated winter wheat in the NCP.

ACS Style

Zhuanyun Si; Muhammad Zain; Shuang Li; Junming Liu; Yueping Liang; Yang Gao; Aiwang Duan. Optimizing nitrogen application for drip-irrigated winter wheat using the DSSAT-CERES-Wheat model. Agricultural Water Management 2020, 244, 106592 .

AMA Style

Zhuanyun Si, Muhammad Zain, Shuang Li, Junming Liu, Yueping Liang, Yang Gao, Aiwang Duan. Optimizing nitrogen application for drip-irrigated winter wheat using the DSSAT-CERES-Wheat model. Agricultural Water Management. 2020; 244 ():106592.

Chicago/Turabian Style

Zhuanyun Si; Muhammad Zain; Shuang Li; Junming Liu; Yueping Liang; Yang Gao; Aiwang Duan. 2020. "Optimizing nitrogen application for drip-irrigated winter wheat using the DSSAT-CERES-Wheat model." Agricultural Water Management 244, no. : 106592.

Journal article
Published: 28 September 2020 in Soil and Tillage Research
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Coupling effective cultivation patterns and suitable irrigation scheduling may provide insight for the development of water-saving agricultural systems. A 2-year field experiment was conducted to determine seasonal dynamics in root water uptake (RWU) of winter wheat under a new planting pattern of High-Low Seed Beds Cultivation (HLSC). Stable isotopes of δD and δ18O in different water sources were measured and the RWU of wheat was quantified by the MIXSIAR model. The proportions of RWU from the 0∼30 cm soil layer at different growth stages were significantly different for the wheat on the low beds, while it was not significantly different for the wheat on the high beds. Winter wheat took approximately 65 % of its required water from the 0∼60 cm soil throughout all growth stages. However, for an irrigation with a 90 mm quota, the experimental result showed that only 72 % of the irrigated water was finally stored in the soil layer of 0∼60 cm, which indicated nearly 30 % of the irrigated water infiltrated below 60 cm and will be less available. These results suggested that the designed irrigation wetting depth for winter wheat should be set as less than 60 cm under HLSC pattern.

ACS Style

Junming Liu; Zhuanyun Si; Lifeng Wu; Jinsai Chen; Yang Gao; Aiwang Duan. Using stable isotopes to quantify root water uptake under a new planting pattern of high-low seed beds cultivation in winter wheat. Soil and Tillage Research 2020, 205, 104816 .

AMA Style

Junming Liu, Zhuanyun Si, Lifeng Wu, Jinsai Chen, Yang Gao, Aiwang Duan. Using stable isotopes to quantify root water uptake under a new planting pattern of high-low seed beds cultivation in winter wheat. Soil and Tillage Research. 2020; 205 ():104816.

Chicago/Turabian Style

Junming Liu; Zhuanyun Si; Lifeng Wu; Jinsai Chen; Yang Gao; Aiwang Duan. 2020. "Using stable isotopes to quantify root water uptake under a new planting pattern of high-low seed beds cultivation in winter wheat." Soil and Tillage Research 205, no. : 104816.

Original paper
Published: 01 August 2020 in Cereal Research Communications
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Under the random effect of year, the correct evaluation of varieties is the basis for the producing of high-quality wheat. In this study, 11 winter wheat varieties mainly cultivated in the North Yellow and Huai Valley of China were grown from 2011 to 2014 to investigate the effects of genotype, year, and their interaction on 15 major bread-making quality traits as well as the relationships between quality parameters, reliability, and suitability of the genotypes. We found that protein content, wet gluten content, sedimentation volume, test weight, and falling number were mostly influenced by the year. Annual variations in the relationships between quality traits differed considerably. Correlation coefficients between gluten index and both maximum resistance and dough stability (r = 0.68 to 0.88) were significant over the three growing seasons. A high intra-class correlation coefficient for gluten index (0.74) was observed. Gluten index is a reliable early-generation predictor of gluten strength. Bidimensional clustering analysis and heatmap are useful for suitability analysis of high-quality wheat. Safety-first indices can be useful to plant breeders for reliability analyses of high-quality genotypes, and only one genotype was screened out. The considerable effects of year were demonstrated, suggesting that the reliability of quality genotypes should be improved in the North Yellow and Huai Valley of China.

ACS Style

Sheng Kun; Yang Lijuan; Li Xiaohang; Gao Yang; Jiang Zhikai; Duan Aiwang. Grain quality variations from year to year among the Chinese genotypes. Cereal Research Communications 2020, 48, 499 -505.

AMA Style

Sheng Kun, Yang Lijuan, Li Xiaohang, Gao Yang, Jiang Zhikai, Duan Aiwang. Grain quality variations from year to year among the Chinese genotypes. Cereal Research Communications. 2020; 48 (4):499-505.

Chicago/Turabian Style

Sheng Kun; Yang Lijuan; Li Xiaohang; Gao Yang; Jiang Zhikai; Duan Aiwang. 2020. "Grain quality variations from year to year among the Chinese genotypes." Cereal Research Communications 48, no. 4: 499-505.

Journal article
Published: 11 January 2020 in Agricultural Water Management
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Drip irrigation has been gradually adopted for winter wheat production in the North China Plain (NCP) due to significant saving from using irrigation water and improving water and nitrogen use efficiencies. However, the optimal water and nitrogen application rates for drip-irrigated wheat are still unclear. A field experiment with five nitrogen application rates (0, 120, 180, 240, and 300 kg ha−1, referred as N0, N1, N2, N3, and N4) and three irrigation levels (40, 30, and 20 mm per irrigation, referred as I1, I2, and I3) was conducted during the 2015–2016 and 2016–2017 winter wheat seasons to study the effects of irrigation and nitrogen rates on crop growth, yield, and the water and nitrogen use efficiencies. Results showed that increasing irrigation and nitrogen application rates notably improved actual evapotranspiration, leaf area index, aboveground biomass, grain yield, and water use efficiency (WUE) of winter wheat. However, nitrogen application rates exceeding 240 kg ha−1 were not beneficial for wheat growth, grain yield, WUE, and irrigation water use efficiency (IWUE). The maximum grain yields of 8034 and 8760 kg ha−1 were achieved in N3I1, which had WUE of 2.08 and 2.23 kg m−3, and IWUE of 4.46 and 4.87 kg m−3 in 2015–2016 and 2016–2017, respectively. At the same time, N3I1 did not result in much reduction of nitrogen partial factor productivity (NPFP) (average of 34.99 kg kg−1 in N3I1 for two seasons). Considering comprehensively growth, yield, WUE, IWUE, and NPFP, combination of N rate of 240 kg ha−1 and irrigation quota of 40 mm per irrigation was optimal pattern for drip-irrigated winter wheat. These results may provide a scientific basis for water and nitrogen management of drip-irrigated winter wheat in the NCP.

ACS Style

Zhuanyun Si; Muhammad Zain; Faisal Mehmood; Guangshuai Wang; Yang Gao; Aiwang Duan. Effects of nitrogen application rate and irrigation regime on growth, yield, and water-nitrogen use efficiency of drip-irrigated winter wheat in the North China Plain. Agricultural Water Management 2020, 231, 106002 .

AMA Style

Zhuanyun Si, Muhammad Zain, Faisal Mehmood, Guangshuai Wang, Yang Gao, Aiwang Duan. Effects of nitrogen application rate and irrigation regime on growth, yield, and water-nitrogen use efficiency of drip-irrigated winter wheat in the North China Plain. Agricultural Water Management. 2020; 231 ():106002.

Chicago/Turabian Style

Zhuanyun Si; Muhammad Zain; Faisal Mehmood; Guangshuai Wang; Yang Gao; Aiwang Duan. 2020. "Effects of nitrogen application rate and irrigation regime on growth, yield, and water-nitrogen use efficiency of drip-irrigated winter wheat in the North China Plain." Agricultural Water Management 231, no. : 106002.

Journal article
Published: 10 December 2019 in Agronomy
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A sustainable management strategy of soil fertility and cropping system is critical to guaranteeing food security. However, little is known about the effects of soil amendment strategies on crop growth via regulating soil moisture and photosynthesis in a ridge and furrow cropping system. Here, field experiments were carried out in 2017 and 2018 in semi-arid areas of Loess Plateau, northwest China to investigate the effects of integrated use of ridge and furrow planting and manure amendment on grain yields of maize. Four treatments were designed: CK (flat planting with 100% chemical fertilizer), RFC (ridge and furrow planting with 100% chemical fertilizer), RFR (ridge and furrow planting with 100% control-released fertilizer), and RFM (ridge and furrow planting with 50% manure fertilizer + 50% N fertilizer). On average, RFM increased photosynthetic rates (Pn) by 74%, followed by RFR by 47%, and RFC by 26%, compared to CK. Also, stomatal conductance (Cd), transpiration rates (Tr), and intercellular CO2 concentration (Ci) were highest with RFM, followed by RFR and RFC. Averaged across the two years, RFM conserved 10% more soil water storage (SWS) than CK did at harvest, followed by RFR with an increment by 8%. However, RFC consumed more soil water than CK did, with its ETc 8% higher than CK. Consequently, spring maize treated with RFM suffered less drought stress, especially in 2017 when precipitation was insufficient. On average, grain yields and water use efficiency of RFM were increased by 18% and 27%, compared to CK. Structural equation modeling analysis showed that there existed significant positive correlation between SWS in top layers and grain yields, while SWS in deep layers had negative effects on grain yields. In conclusion, the incorporation of manure into ridge and furrow planting system can be an efficient agronomic practice to improve plant photosynthesis, optimize soil moisture, and boost grain yields in semi-arid areas of Loess Plateau, northwest China.

ACS Style

Anzhen Qin; Yanjie Fang; Dongfeng Ning; Zhandong Liu; Ben Zhao; Junfu Xiao; Aiwang Duan; Beibei Yong. Incorporation of Manure into Ridge and Furrow Planting System Boosts Yields of Maize by Optimizing Soil Moisture and Improving Photosynthesis. Agronomy 2019, 9, 865 .

AMA Style

Anzhen Qin, Yanjie Fang, Dongfeng Ning, Zhandong Liu, Ben Zhao, Junfu Xiao, Aiwang Duan, Beibei Yong. Incorporation of Manure into Ridge and Furrow Planting System Boosts Yields of Maize by Optimizing Soil Moisture and Improving Photosynthesis. Agronomy. 2019; 9 (12):865.

Chicago/Turabian Style

Anzhen Qin; Yanjie Fang; Dongfeng Ning; Zhandong Liu; Ben Zhao; Junfu Xiao; Aiwang Duan; Beibei Yong. 2019. "Incorporation of Manure into Ridge and Furrow Planting System Boosts Yields of Maize by Optimizing Soil Moisture and Improving Photosynthesis." Agronomy 9, no. 12: 865.

Journal article
Published: 12 March 2019 in Agricultural Water Management
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The knowledge of suitable irrigation methods coupled with effective irrigation scheduling to improve agricultural water use efficiency has become increasingly necessary for farmers in the North China Plain to ameliorate the severe water shortage that has threatened winter wheat (Triticum aestivum L) production. A two-season field experiment was conducted in a winter wheat field amide to compare the efficiency of three irrigation methods sprinkler irrigation (SI), surface drip irrigation (SDI) and flood irrigation (FI) under three irrigation schedules by irrigating while soil moisture decreased to 70%, 60% and 50% of the field capacity respectively. It was found that irrigation methods with suitable irrigation scheduling indeed have the potential to balance the optimal yield and water use efficiency. The results showed that irrigating 180.3 mm and 175.2 mm of water in the two studied seasons respectively was optimal to achieve the highest grain yield. For SDI and SI, this could be achieved by irrigating six times each with 30 mm of water, while for FI irrigating three times each with 60 mm of water gave comparable results. Our studies suggested that irrigating while soil moisture reduced to 60% of the field capacity by SDI was the best in all aspects compared with other irrigation methods and irrigation schedules.

ACS Style

Shiva Kumar Jha; Tefo Steve Ramatshaba; Guangshuai Wang; Yueping Liang; Hao Liu; Yang Gao; Aiwang Duan. Response of growth, yield and water use efficiency of winter wheat to different irrigation methods and scheduling in North China Plain. Agricultural Water Management 2019, 217, 292 -302.

AMA Style

Shiva Kumar Jha, Tefo Steve Ramatshaba, Guangshuai Wang, Yueping Liang, Hao Liu, Yang Gao, Aiwang Duan. Response of growth, yield and water use efficiency of winter wheat to different irrigation methods and scheduling in North China Plain. Agricultural Water Management. 2019; 217 ():292-302.

Chicago/Turabian Style

Shiva Kumar Jha; Tefo Steve Ramatshaba; Guangshuai Wang; Yueping Liang; Hao Liu; Yang Gao; Aiwang Duan. 2019. "Response of growth, yield and water use efficiency of winter wheat to different irrigation methods and scheduling in North China Plain." Agricultural Water Management 217, no. : 292-302.

Journal article
Published: 07 June 2018 in DEStech Transactions on Computer Science and Engineering
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Crop evapotranspiration (ETc) simulation is important to modeling hydrological process in agro-ecosystem. In this study, ETc was monitored using a large-scale weighing lysimeter system, along with Insentek soil moisture probes at Xuchang Irrigation Experiment Station in 2015 and 2016. Relationships among daily ETc, leaf area index (LAI) and soil water content (SWC) were determined using the Levenberg–Marquardt Algorithm. Our results showed that ETc was significantly correlated with SWC in 0-40 cm soil layers, but not correlated with SWC below 40 cm soil layer. ETc was related to SWC in an exponential function combined with a quadratic function. Effects of SWC in 0-30 cm soil layers accounted for 32-53% variations of ETc. Averaging SWC across the 0-30 cm soil depth, it contributed 46% variations of ETc. Moreover, ETc was correlated with LAI in a negative linear manner, but its correlation coefficient is not significant (P>0.05). We concluded that SWC at top soil layer can be adopted to calibrate Insentek ETc simulation for maize plants.

ACS Style

An-Zhen Qin; Dong-Feng Ning; Zhan-Dong Liu; Ben Zhao; Zu-Gui Liu; Ai-Wang Duan; Jun-Fu Xiao. Simulating Crop Evapotranspiration Using Insentek Soil Moisture for Maize Plants on Lysimeters. DEStech Transactions on Computer Science and Engineering 2018, 1 .

AMA Style

An-Zhen Qin, Dong-Feng Ning, Zhan-Dong Liu, Ben Zhao, Zu-Gui Liu, Ai-Wang Duan, Jun-Fu Xiao. Simulating Crop Evapotranspiration Using Insentek Soil Moisture for Maize Plants on Lysimeters. DEStech Transactions on Computer Science and Engineering. 2018; (icmsa):1.

Chicago/Turabian Style

An-Zhen Qin; Dong-Feng Ning; Zhan-Dong Liu; Ben Zhao; Zu-Gui Liu; Ai-Wang Duan; Jun-Fu Xiao. 2018. "Simulating Crop Evapotranspiration Using Insentek Soil Moisture for Maize Plants on Lysimeters." DEStech Transactions on Computer Science and Engineering , no. icmsa: 1.

Journal article
Published: 10 May 2018 in DEStech Transactions on Materials Science and Engineering
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ACS Style

An-Zhen Qin; Dong-Feng Ning; Zhan-Dong Liu; Ben Zhao; Zu-Gui Liu; Ai-Wang Duan; Jun-Fu Xiao. Simulating Crop Evapotranspiration Using Insentek Soil Moisture for Maize Plants on Lysimeters. DEStech Transactions on Materials Science and Engineering 2018, 1 .

AMA Style

An-Zhen Qin, Dong-Feng Ning, Zhan-Dong Liu, Ben Zhao, Zu-Gui Liu, Ai-Wang Duan, Jun-Fu Xiao. Simulating Crop Evapotranspiration Using Insentek Soil Moisture for Maize Plants on Lysimeters. DEStech Transactions on Materials Science and Engineering. 2018; (icmsa):1.

Chicago/Turabian Style

An-Zhen Qin; Dong-Feng Ning; Zhan-Dong Liu; Ben Zhao; Zu-Gui Liu; Ai-Wang Duan; Jun-Fu Xiao. 2018. "Simulating Crop Evapotranspiration Using Insentek Soil Moisture for Maize Plants on Lysimeters." DEStech Transactions on Materials Science and Engineering , no. icmsa: 1.

Journal article
Published: 01 February 2018 in European Journal of Agronomy
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ACS Style

Ben Zhao; Aiwang Duan; Syed Tahir Ata-Ul-Karim; Zhandong Liu; Zhifang Chen; Zhihong Gong; Jiyang Zhang; Junfu Xiao; Zugui Liu; Anzhen Qin; Dongfeng Ning. Exploring new spectral bands and vegetation indices for estimating nitrogen nutrition index of summer maize. European Journal of Agronomy 2018, 93, 113 -125.

AMA Style

Ben Zhao, Aiwang Duan, Syed Tahir Ata-Ul-Karim, Zhandong Liu, Zhifang Chen, Zhihong Gong, Jiyang Zhang, Junfu Xiao, Zugui Liu, Anzhen Qin, Dongfeng Ning. Exploring new spectral bands and vegetation indices for estimating nitrogen nutrition index of summer maize. European Journal of Agronomy. 2018; 93 ():113-125.

Chicago/Turabian Style

Ben Zhao; Aiwang Duan; Syed Tahir Ata-Ul-Karim; Zhandong Liu; Zhifang Chen; Zhihong Gong; Jiyang Zhang; Junfu Xiao; Zugui Liu; Anzhen Qin; Dongfeng Ning. 2018. "Exploring new spectral bands and vegetation indices for estimating nitrogen nutrition index of summer maize." European Journal of Agronomy 93, no. : 113-125.

Original research article
Published: 19 January 2018 in Frontiers in Plant Science
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Rapid and non-destructive diagnostic tools to accurately assess crop nitrogen nutrition index (NNI) are imperative for improving crop nitrogen (N) diagnosis and sustaining crop production. This study was aimed to develop the relationships among NNI, leaf N gradient, chlorophyll meter (CM) readings gradient, and positional differences chlorophyll meter index [PDCMI, the ratio of CM readings between different leaf layers (LLs) of crop canopy] and to validate the accuracy and stability of these relationships across the different LLs, years, sites, and cultivars. Six multi-N rates (0–320 kg ha−1) field experiments were conducted with four summer maize cultivars (Zhengdan958, Denghai605, Xundan20, and Denghai661) at two different sites located in China. Six summer maize plants per plot were harvested at each sampling stage to assess NNI, leaf N concentration and CM readings of different LLs during the vegetative growth period. The results showed that the leaf N gradient, CM readings gradient and PDCMI of different LLs decreased, while the NNI values increased with increasing N supply. The leaf N gradient and CM readings gradient increased gradually from top to bottom of the canopy and CM readings of the bottom LL were more sensitive to changes in plant N concentration. The significantly positive relationship between NNI and CM readings of different LLs (LL1 to LL3) was observed, yet these relationships varied across the years. In contrast, the relationships between NNI and PDCMI of different LLs (LL1 to LL3) were significantly negative. The strongest relationship between PDCMI and NNI which was stable across the cultivars and years was observed for PDCMI1−3 (NNI = −5.74 × PDCMI1−3+1.5, R2 = 0.76**). Additionally, the models developed in this study were validated with the data acquired from two independent experiments to assess their accuracy of prediction. The root mean square error value of 0.1 indicated that the most accurate and robust relationship was observed between PDCMI1–3 and NNI. The projected results would help to develop a simple, non-destructive and reliable approach to accurately assess the crop N status for precisely managing N application during the growth period of summer maize crop.

ACS Style

Ben Zhao; Syed Tahir Ata-Ul-Karim; Zhandong Liu; Jiyang Zhang; Junfu Xiao; Zugui Liu; Anzhen Qin; Dongfeng Ning; Qiuxia Yang; Yonghui Zhang; Aiwang Duan. Simple Assessment of Nitrogen Nutrition Index in Summer Maize by Using Chlorophyll Meter Readings. Frontiers in Plant Science 2018, 9, 11 .

AMA Style

Ben Zhao, Syed Tahir Ata-Ul-Karim, Zhandong Liu, Jiyang Zhang, Junfu Xiao, Zugui Liu, Anzhen Qin, Dongfeng Ning, Qiuxia Yang, Yonghui Zhang, Aiwang Duan. Simple Assessment of Nitrogen Nutrition Index in Summer Maize by Using Chlorophyll Meter Readings. Frontiers in Plant Science. 2018; 9 ():11.

Chicago/Turabian Style

Ben Zhao; Syed Tahir Ata-Ul-Karim; Zhandong Liu; Jiyang Zhang; Junfu Xiao; Zugui Liu; Anzhen Qin; Dongfeng Ning; Qiuxia Yang; Yonghui Zhang; Aiwang Duan. 2018. "Simple Assessment of Nitrogen Nutrition Index in Summer Maize by Using Chlorophyll Meter Readings." Frontiers in Plant Science 9, no. : 11.

Journal article
Published: 01 July 2017 in Field Crops Research
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ACS Style

Ben Zhao; Syed Tahir Ata-Ul-Karim; Zhandong Liu; Dongfeng Ning; Junfu Xiao; Zugui Liu; Anzhen Qin; Jiqin Nan; Aiwang Duan. Development of a critical nitrogen dilution curve based on leaf dry matter for summer maize. Field Crops Research 2017, 208, 60 -68.

AMA Style

Ben Zhao, Syed Tahir Ata-Ul-Karim, Zhandong Liu, Dongfeng Ning, Junfu Xiao, Zugui Liu, Anzhen Qin, Jiqin Nan, Aiwang Duan. Development of a critical nitrogen dilution curve based on leaf dry matter for summer maize. Field Crops Research. 2017; 208 ():60-68.

Chicago/Turabian Style

Ben Zhao; Syed Tahir Ata-Ul-Karim; Zhandong Liu; Dongfeng Ning; Junfu Xiao; Zugui Liu; Anzhen Qin; Jiqin Nan; Aiwang Duan. 2017. "Development of a critical nitrogen dilution curve based on leaf dry matter for summer maize." Field Crops Research 208, no. : 60-68.

Journal article
Published: 15 June 2017 in Crop Science
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Zhandong Liu; Anzhen Qin; Jiyang Zhang; Jingsheng Sun; Dongfeng Ning; Ben Zhao; Junfu Xiao; Zugui Liu; Aiwang Duan. Maize Yield as a Function of Water Availability across Precipitation Years in the North China Plain. Crop Science 2017, 57, 2226 -2237.

AMA Style

Zhandong Liu, Anzhen Qin, Jiyang Zhang, Jingsheng Sun, Dongfeng Ning, Ben Zhao, Junfu Xiao, Zugui Liu, Aiwang Duan. Maize Yield as a Function of Water Availability across Precipitation Years in the North China Plain. Crop Science. 2017; 57 (4):2226-2237.

Chicago/Turabian Style

Zhandong Liu; Anzhen Qin; Jiyang Zhang; Jingsheng Sun; Dongfeng Ning; Ben Zhao; Junfu Xiao; Zugui Liu; Aiwang Duan. 2017. "Maize Yield as a Function of Water Availability across Precipitation Years in the North China Plain." Crop Science 57, no. 4: 2226-2237.

Journal article
Published: 14 June 2016 in Transactions of the ASABE
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Zhaojiang Meng; Aiwang Duan; Kithsiri Bandara Dassanayake; Deli Chen; Yao Gao; Xiaosen Wang; Xiaojun Shen. Effects of Regulated Deficit Irrigation on Grain Yield and Quality Traits in Winter Wheat. Transactions of the ASABE 2016, 59, 897 -907.

AMA Style

Zhaojiang Meng, Aiwang Duan, Kithsiri Bandara Dassanayake, Deli Chen, Yao Gao, Xiaosen Wang, Xiaojun Shen. Effects of Regulated Deficit Irrigation on Grain Yield and Quality Traits in Winter Wheat. Transactions of the ASABE. 2016; 59 (3):897-907.

Chicago/Turabian Style

Zhaojiang Meng; Aiwang Duan; Kithsiri Bandara Dassanayake; Deli Chen; Yao Gao; Xiaosen Wang; Xiaojun Shen. 2016. "Effects of Regulated Deficit Irrigation on Grain Yield and Quality Traits in Winter Wheat." Transactions of the ASABE 59, no. 3: 897-907.

Research article
Published: 21 April 2016 in PLoS ONE
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Long-term tillage has been shown to induce water stress episode during crop growth period due to low water retention capacity. It is unclear whether integrated water conservation tillage systems, such asspringdeepinter-row subsoiling with annual or biennial repetitions, can be developed to alleviate this issue while improve crop productivity. Experimentswere carried out in a spring maize cropping system on Calcaric-fluvicCambisolsatJiaozuoexperimentstation, northern China, in 2009 to 2014. Effects of threesubsoiling depths (i.e., 30 cm, 40 cm, and 50 cm) in combination with annual and biennial repetitionswasdetermined in two single-years (i.e., 2012 and 2014)againstthe conventional tillage. The objectives were to investigateyield response to subsoiling depths and soil water deficit(SWD), and to identify the most effective subsoiling treatment using a systematic assessment. Annualsubsoiling to 50 cm (AS-50) increased soil water storage (SWS, mm) by an average of8% in 0–20 cm soil depth, 19% in 20–80 cm depth, and 10% in 80–120 cm depth, followed by AS-40 and BS-50, whereas AS-30 and BS-30 showed much less effects in increasing SWS across the 0–120 cm soil profile, compared to the CK. AS-50 significantly reduced soil water deficit (SWD, mm) by an average of123% during sowing to jointing, 318% during jointing to filling, and 221% during filling to maturity, compared to the CK, followed by AS-40 and BS-50. An integrated effect on increasing SWS and reducing SWD helped AS-50 boost grain yield by an average of 31% and biomass yield by 30%, compared to the CK. A power function for subsoiling depth and a negative linear function for SWD were used to fit the measured yields, showing the deepest subsoiling depth (50 cm) with the lowest SWD contributed to the highest yield. Systematic assessment showed that AS-50 received the highest evaluation index (0.69 out of 1.0) among all treatments. Deepinter-row subsoilingwith annual repetition significantly boosts yield by alleviating SWD in critical growth period and increasing SWS in 20–80 cm soil depth. The results allow us to conclude that AS-50 can be adopted as an effective approach to increase crop productivity, alleviate water stress, and improve soil water availability for spring maize in northern China.

ACS Style

Zhandong Liu; Anzhen Qin; Ben Zhao; Syed Tahir Ata-Ul-Karim; Junfu Xiao; Jingsheng Sun; Dongfeng Ning; Zugui Liu; Jiqin Nan; Aiwang Duan. Yield Response of Spring Maize to Inter-Row Subsoiling and Soil Water Deficit in Northern China. PLoS ONE 2016, 11, e0153809 .

AMA Style

Zhandong Liu, Anzhen Qin, Ben Zhao, Syed Tahir Ata-Ul-Karim, Junfu Xiao, Jingsheng Sun, Dongfeng Ning, Zugui Liu, Jiqin Nan, Aiwang Duan. Yield Response of Spring Maize to Inter-Row Subsoiling and Soil Water Deficit in Northern China. PLoS ONE. 2016; 11 (4):e0153809.

Chicago/Turabian Style

Zhandong Liu; Anzhen Qin; Ben Zhao; Syed Tahir Ata-Ul-Karim; Junfu Xiao; Jingsheng Sun; Dongfeng Ning; Zugui Liu; Jiqin Nan; Aiwang Duan. 2016. "Yield Response of Spring Maize to Inter-Row Subsoiling and Soil Water Deficit in Northern China." PLoS ONE 11, no. 4: e0153809.

Journal article
Published: 01 January 2016 in Agricultural Water Management
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Effects of different irrigation methods on greenhouse gas (GHG) emissions in winter wheat field are poorly understood. In this study, emissions of carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) were investigated in winter wheat field irrigated with surface drip irrigation (SDI), sprinkler irrigation (SI) and flood irrigation (CK) from 1 April to 31 May of 2014 in the North China Plain. The results showed that SDI increased CH4 uptake by 22.9%, reduced N2O emission by 14.6%, improved irrigation water use efficiency (IWUE) by 44.2%, and could keep yield steady. IWUE and yield of winter wheat in SI was greater than that in CK by 28.2% and 8.5%, respectively. These combined results indicated that SDI may not only guarantee yield stability, but also mitigate GHG (CH4 and N2O) emissions and improve IWUE. Therefore, more attention should be paid to apply SDI in winter wheat field in the North China Plain.

ACS Style

Guangshuai Wang; Yueping Liang; Qian Zhang; Shiva K. Jha; Yang Gao; Xiaojun Shen; Jingsheng Sun; Aiwang Duan. Mitigated CH 4 and N 2 O emissions and improved irrigation water use efficiency in winter wheat field with surface drip irrigation in the North China Plain. Agricultural Water Management 2016, 163, 403 -407.

AMA Style

Guangshuai Wang, Yueping Liang, Qian Zhang, Shiva K. Jha, Yang Gao, Xiaojun Shen, Jingsheng Sun, Aiwang Duan. Mitigated CH 4 and N 2 O emissions and improved irrigation water use efficiency in winter wheat field with surface drip irrigation in the North China Plain. Agricultural Water Management. 2016; 163 ():403-407.

Chicago/Turabian Style

Guangshuai Wang; Yueping Liang; Qian Zhang; Shiva K. Jha; Yang Gao; Xiaojun Shen; Jingsheng Sun; Aiwang Duan. 2016. "Mitigated CH 4 and N 2 O emissions and improved irrigation water use efficiency in winter wheat field with surface drip irrigation in the North China Plain." Agricultural Water Management 163, no. : 403-407.

Article
Published: 14 September 2015 in Irrigation and Drainage
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In three growing seasons from 2009 to 2012, we investigated the effects of different combinations of pre-sowing irrigation and supplemental irrigation on crop water consumption, grain yield, and water productivity (WP) of winter wheat. One conventional irrigation schedule (irrigation applied at the overwintering and jointing stages) can stabilize wheat yield and WP with low or sufficient rainfall, but another conventional irrigation schedule (irrigation applied at the reviving and filling stages) decreased wheat yield and WP significantly with continuous droughts throughout winter and spring. The winter wheat with the pre-sowing irrigation and supplemental irrigation applied at the recovery or elongation stage had a grain yield and WP in the seasons with less rainfall during the early growing stage that was higher than 7500 kg ha-1 and 1.85 kg m-3, respectively. In contrast, the irrigation schedule with the pre-sowing irrigation and irrigation applied at the grain-filling stage decreased wheat yield and WP significantly in the seasons with continuous droughts throughout winter and spring. These results indicated that combined with pre-sowing irrigation, supplemental irrigation should be applied at the recovery stage and not later than the jointing stage; otherwise, the grain yield and WP of winter wheat will be decreased. Copyright © 2015 John Wiley & Sons, Ltd. Nous avons étudié les effets de différentes combinaisons d'irrigation de pré-semis et d'irrigation de complément sur la consommation d'eau des cultures, le rendement en grains et la productivité de l'eau (WP) du blé d'hiver pour les trois campagnes de 2009 à 2012. Un calendrier conventionnel d'irrigation (irrigation appliquée aux stades d'hivernage et de développement) peut stabiliser le rendement du blé et WP avec des précipitations faibles ou suffisantes, mais un autre programme d'irrigation classique (irrigation appliquée à la revigoration et aux phases de remplissage) a vu diminuer significativement le rendement du blé et WP en cas de sécheresse continue tout au long de l'hiver et du printemps. En année peu arrosée, le blé d'hiver avec une irrigation de pré-semis et une irrigation d'appoint appliquées aux phases de reprise de croissance et d'allongement avait un rendement en grains et WP supérieurs à 7500 kg ha-1 et 1.85 kg m-3, respectivement, ceci dans le cas d'une saison peu arrosée en phase de croissance. En revanche, une irrigation de pré-semis et une irrigation appliquée à la phase de remplissage du grain ont significativement diminué le rendement du blé et WP en cas d'hiver et de printemps secs. Ces résultats indiquent que combinée avec l'irrigation de pré-semis, l'irrigation d'appoint doit être appliquée à la phase de récupération et pas plus tard que la phase de développement; autrement, le rendement en grains et WP du blé d'hiver seront affectés. Copyright © 2015 John Wiley & Sons, Ltd.

ACS Style

Yang Gao; Xiaojun Shen; Xinqiang Li; Zhaojiang Meng; Jingsheng Sun; Aiwang Duan. Effects of pre-Sowing Irrigation on Crop Water Consumption, Grain Yield and Water Productivity of Winter Wheat in the North China Plain. Irrigation and Drainage 2015, 64, 566 -574.

AMA Style

Yang Gao, Xiaojun Shen, Xinqiang Li, Zhaojiang Meng, Jingsheng Sun, Aiwang Duan. Effects of pre-Sowing Irrigation on Crop Water Consumption, Grain Yield and Water Productivity of Winter Wheat in the North China Plain. Irrigation and Drainage. 2015; 64 (4):566-574.

Chicago/Turabian Style

Yang Gao; Xiaojun Shen; Xinqiang Li; Zhaojiang Meng; Jingsheng Sun; Aiwang Duan. 2015. "Effects of pre-Sowing Irrigation on Crop Water Consumption, Grain Yield and Water Productivity of Winter Wheat in the North China Plain." Irrigation and Drainage 64, no. 4: 566-574.

Journal article
Published: 08 August 2014 in Agricultural Water Management
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Winter wheat (Triticum aestivum L.) production in the North China Plain (NCP) is threatened by insufficient water supply. Interest in microirrigation is increasing in the NCP, while data and guidance for microirrigation scheduling are lacking. An accurate estimation of actual crop evapotranspiration (ETa) is critical for appropriate water management. In this study, therefore, the SIMDualKc model was calibrated with the data from a three-season experiment, and ETa of winter wheat with subsurface drip irrigation (SDI) was estimated with the dual crop coefficient approach and stress adjustments described in the FAO-56 using the data of the other two treatments. The mean value of basal crop coefficient (Kcb) for the winter wheat at the initial-, mid-, and late-season growth stages over the three seasons was 0.25, 1.06, and 0.34, respectively. Over the three growing seasons, the ETa for subsurface drip-irrigated wheat with three irrigation treatments ranged from 393 to 449 mm. The Kc-local (ETa/ETo) values for the winter wheat with SDI were 0.34–0.80, 0.91–1.11, and 0.41–0.98, respectively, at the initial-, mid-, and late-season growth stages. Results indicated that the procedure of the dual Kc approach and stress adjustments simulated ETa of the winter wheat reasonably well, with the average absolute error (AAE) of 0.36 mm d−1, the root mean square error (RMSE) of 0.43 mm d−1,the index of agreement (d) of 0.98, the Nash–Sutcliffe efficiency (NSE) of 0.91, and the RMSE-observations standard deviation ratio (RSR) of 0.31. Discrepancy between the simulated and measured data was mainly attributed to the assumption of a uniform distribution of soil water around an emitter. Irrigation rates have significant effects on ETa, grain yield and WUE. Based on effects of irrigation rates on grain yield and WUE, irrigation schedule for optimum yield and WUE was developed for winter wheat. It was estimated that grain yield and WUE of winter wheat with the optimum irrigation schedule was 7780 kg ha−1 and 1.83 kg m−3, respectively. The simulated results can be used as a reference for irrigation schedule and water management for winter wheat in the NCP.

ACS Style

Yang Gao; Linlin Yang; Xiaojun Shen; Xinqiang Li; Jingsheng Sun; Aiwang Duan; Laosheng Wu. Winter wheat with subsurface drip irrigation (SDI): Crop coefficients, water-use estimates, and effects of SDI on grain yield and water use efficiency. Agricultural Water Management 2014, 146, 1 -10.

AMA Style

Yang Gao, Linlin Yang, Xiaojun Shen, Xinqiang Li, Jingsheng Sun, Aiwang Duan, Laosheng Wu. Winter wheat with subsurface drip irrigation (SDI): Crop coefficients, water-use estimates, and effects of SDI on grain yield and water use efficiency. Agricultural Water Management. 2014; 146 ():1-10.

Chicago/Turabian Style

Yang Gao; Linlin Yang; Xiaojun Shen; Xinqiang Li; Jingsheng Sun; Aiwang Duan; Laosheng Wu. 2014. "Winter wheat with subsurface drip irrigation (SDI): Crop coefficients, water-use estimates, and effects of SDI on grain yield and water use efficiency." Agricultural Water Management 146, no. : 1-10.