The Use of Combined Working Bodies and Units for Fiber Flax Cultivation

Abstract

Abstract. The technological aspects of fiber flax cultivation under various conditions were considered. The use of mole ploughing was proposed to solve a serious problem of excessive humidity and violation of the arable layer aeration. This operation can be performed simultaneously with plowing when using a device for general-purpose plows. The authors substantiated the expediency of using combined working bodies and units for high-quality performance. (Research purpose) To analyse the work of combined working bodies and units that perform several operations in one pass. (Materials and methods) The processes and technology for flax cultivation were studied. The following documents were used: GOST standard 20915-2011 and GOST standard 33687-2015. (Results and discussion) Testing a needle working body on a soil bin revealed differences in the needle print sizes depending on the change in the disk speed. It was noted that the width of the prints hardly changed, in contrast to their length. It was found that the distance between adjacent needle prints in the soil decreased significantly when the speed increased from 0.4 to 2.8 meters per second. The authors concluded that a stronger impact on the soil is possible when the speed of 2.8-3.0 meters per second is reached. The field tests of the needle harrow revealed the performance indicator dependence on the speed characteristics. It was found that agrotechnical indicators improve markedly with an increase in the speed of the unit. At the unit speed of 3.0-3.5 meters per second, the following permissible indicators were obtained: ridging – less than 15 millimeters, soil crumbling – about 95 percent. (Conclusions) It was found out that for fiber flax cultivation, non-power needle harrows are effective, they facilitates the performance at higher speeds.