Abstract
Surface tillage for growing crops is carried out with the purpose of crushing its upper layer, grinding crop residues, destroying weeds and leveling the field surface. The purpose of the research is to determine the quality indicators of an experimental soil-cultivating rotor ripping-separating unit using a flexible working body in the form of a cable. Authors studied in field conditions the physicomechanical properties of the soil after autumn plowing, early spring harrowing and cultivation with lancet paws to a depth of 0,12 m. There was analyzed the structural-aggregate composition of the soil obtained after the passage of device, depending on the frequency of rotation of the rotor and the presence of a flexible element in the form of a cable. Studies have been carried out on an experimental soil-cultivating loosening and separating plant on a layer of soil, which, after processing, is stratified into two sublayers: the upper superseed, the lower layer in the seed embedding zone. In the lower soil layer there is a significant advantage of the working bodies with a flexible element in the form of a cable. Increasing the rotor speed from 1,1 to 2,3 s-1 contributes to an increase in the coefficient of soil structure in the lower layer by about 10 %, and in the upper layer by no more than 2,3 %. With the use of a flexible working body in the form of a cable in the composition of the working bodies of the experimental soil-cultivating rotary ripping-separating installation, the coefficient of structure is about 1,5 times higher than the working bodies without it, which provides more favorable conditions for embedding seeds in the soil. It was found that tillage using an experimental soil-cultivating rotary tillage-separating installation as part of the working bodies of which a flexible element in the form of a cable was applied allows us to improve the methods of pre-sowing tillage to improve its agrotechnical qualities.
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