Efficiency of application of combing method when harvesting grain crops

Abstract

Abstract One of the really effective options which can significantly improve the performance of harvesting machines is the equipment of the combing harvester reapers. A significant reduction of the technological mass of the straw entering the threshing device of the combine, reduces load and wear on the working elements of the threshing apparatus and allows for combing at higher speeds. Production costs on the option of direct harvesting has increased with great fuel consumption during the harvest of winter wheat. According to variants of the production costs amounted to 14911.4 when cutting and 14616.9 in the combing plants. The use of harvesting of grain crops by the method of combing increases the profitability of the resulting product. In direct combining, the level of profitability amounted to 63.4 %, when using combing plants – 66,2 %. The combing of the device confirmed its high efficiency, especially in high humidity conditions. The decrease in grain moisture contributed to yield reduction. When harvesting winter wheat with a grain moisture of 16% yield of 3.4 t/ha and 3.3 t/ha, respectively. When comparing two methods of harvesting the difference in yield was 0.2 t/ha. Account yield in the variant with the grain moisture 9 % obtained the following data: in the direct harvesting of 3.1, while the tops of plants of 3.2 t/ha. Sharp decline in the yield suggests that grain moisture 9% is critical in any way of harvesting losses increase significantly due to shedding of grain heap.