Harvesting is the final stage of cultivation of agricultural crops. The quality of the harvested grain material and the terms of harvesting, which should be a maximum of 10–12 days, depend on the condition of the fleet of harvesting machines. However, in the conditions of the Amur region, soybean harvesting lasts for more than 40 days, which leads to a loss of yield due to the stagnation of soybean plants on the root and its low humidity (11–13%). The solution to this problem may be to improve the structure of the combine harvester fleet by purchasing new units with high productivity and a reaper width of at least 9 m, as well as the choice of scientifically sound modes of adjustment to the operation of harvesting machines in soybean harvesting conditions. Based on the variety of combines of Rostselmash used in the agro-industrial complex of the Amur region, the calculation of specific indicators of the ratio of the engine power of the combine to the hopper capacity and to the width of the reapers from the minimum value (4.1 m) to the maximum (9.0 m) was carried out.

Bumbar Ivan V., Kuvshinov Alexey A. 

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