Harvesting Lupinus albus axial rotary combine harvesters | Nikolay Aldoshin, Otari Didmanidze | Agricultural Journals

The analysis of soil cultivation technologies for sowing melon crops was carried out. The design of a combined soil tillage tool capable of plowing, pre-sowing treatment and formation of irrigation furrows in one pass was substantiated. The main tillage is recommended to be done by front plow tools for smooth plowing. Plow bodies of two bottom plows should be mounted along the symmetry axis of the implement according to the lister scheme, which allows not to carry out a full rotation of soil layers and provides automatic formation of irrigation furrow. A loosening and leveling device for strip pre-sowing soil tillage in the sowing zone has been developed. The use of a combined soil tillage tool can reduce labor costs up to 25%, energy consumption for soil preparation up to 50%, reduce the duration of work, reduce soil compaction and retain moisture in the soil layer.

In Russia, the cultivated fields represent a major issue. According to various estimates, they occupy 20-40 million hectares. Of course, this is a great reserve for the development of agriculture and, if necessary, production of in-demand crops. However, if the fields are not used for a long term, they become gradually overgrown with weeds during quarantine: ragweed, hogweed, shrubs and trees. Subsequent introduction of these fields in turnover requires multiple treatments of the soil and the use of potent herbicides due to the high cost of the uprooting of trees. Based on the decisions of the Russian Federation on land conservation, the land management project defining the terms of land conservation, prevention of land degradation, restoring of soil fertility and bringing of life to contaminated areas as well as the order of how these activities should be carried out and their cost and suggestions for land use after the completion of the mentioned processes was developed. However, the technology of land conservation is yet to be developed.

In an activity system aimed at creation of high-quality fodder base for animal agriculture, crop science plays the main role. It facilitates the increase in the productivity of forage crops, which guarantees the relevance of efficiency studies and the developed technologies for improving forage lands. The research was aimed at studying the impact of integrated approaches to improving forage lands in the Central Non-Black Earth Zone. The objectives of the research were as follows: to present a methodology for monitoring agricultural fields for the subsequent improvement of forage lands; to develop an efficient technology for improving forage lands using modern mechanization means; to study the productivity of different grass mixtures when implementing various options for soil cultivation. Based on the results of three years of theoretical and experimental research, a technological scheme for fodder land improvement (including technical processes) was compiled: monitoring of fields, preparation of grass mixtures and mineral fertilizers, preparation and tuning of machine-tractor aggregates, assessment of the yield of two-time grass cutting and secondary monitoring of fields. The proposed technology included several levelling technological operations (including levelling of hillocks), operations for the preparation of the seedbed and the seed material in the form of grass mixtures and mineral fertilizers and subsequent strip sowing. It has been established that when improving fodder lands as well as the quality of soil preparation, the prevalence of milling created more favorable conditions for increasing productivity of perennial grasses compared to disking.

A comparative analysis of existing technologies for the cultivation of melons and gourds, which made it possible to identify their advantages and disadvantages, has been carried out. As a tool for the primary cultivation, a frontal plow is proposed, which is designed for smooth plowing and ensuring the rotation of the soil layer directly in its own furrow.

The work of the air-and-screen cleaner of a grain combine harvester is considered. Flows of grain–straw heap supplied for cleaning are evaluated. The methods of splitting the heap into grain and...