The components of the mathematical model are substantiated and the theoretical researchresults revealing the interdependence between the technological process factors of the direct harvesting of the grain crops with the high or double stem cut are given in the article. The dependence of the harvester hour productivity on the major factors influencing the efficiency of the grain crop harvesting by the single-phase method is established.
thresher throughput, harvester, working speed, high and double cut, intermediate product, grain crops
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