The article presents the results of the work quality of the combined soil-cultivating sowing machine adapter KMFA-3.6 when sowing soybean. Large agricultural organizations have ample opportunities to purchase modern equipment, fertilizers and plant protection products, while the financial capabilities of many peasant (farmer) households are limited. One of the ways to solve the problem is the reconstruction and modernization of existing technical means of mechanization in accordance with the achievements of science and practice. The field experiment was carried out in 2019–2020 in the Amur region on the experimental field of the Far Eastern Scientific Research Institute of Mechanization and Electrification of Agriculture on a typical meadow chernozem-like soil. During the active growth of soybeans in 2019 the weather was cooler and wetter than in 2020. The influence of KMFA-3,6 working bodies was studied (fertilizer depth, unit speed, soil density after rolling) on the plant density and soybean yield. Fertilizer depth options are 80 mm (control), 100 and 120 mm. Unit speed parameters are 7 km/h (control), 6 and 9 km/h. Soil density after rolling with a roller is 1.06 g/cm3 (control), 1.12 and 1.18 g/cm3. The soybean variety of the Amur breeding Lazurnaya was chosen for the research. The research method is field experience. The area of the accounting plots is 50 m2, repeated three times. It was revealed that an increase in the speed of the unit to 7.6 km/h reduces the yield, after which it grows. Maximum yield is achieved at soil density value of 1.12 g/cm3 and fertilizer depth value of 104 mm. The following operating parameters are recommended for the KMFA-3.6 adapter: unit speed – 7.63 km/h; fertilizer depth – 100 mm; soil density after rolling – 1.1 g/cm3. In the article, the farmers of the region are recommended to use the combined soil-cultivating and sowing unit adapter KMFA-3.6 in fields with compacted, structureless, waterlogged soils.

Epifantsev Viktor V., Osipov Yakov A., Vaitekhovich Yurii A.

1. Epifantsev V. V., Panasyuk A. N., Osipov Ya. A., Vaitekhovich Yu. A. Vliyanie uglubleniya pochvy na urozhainost' soi pri poseve razlichnymi agregatami [Effect of soil deepening on soybean yield when sown with various aggregates]. Sibirskij vestnik sel'skohozyajstvennoj nauki. – Siberian Herald of Agricultural Science, 2020; 50(1): 13–22 (in Russ.).
2. Dospekhov B. A. Metodika polevogo opyta (s osnovami statisticheskoy obrabotki rezul'tatov issledovaniy) [Field experiment methodology (with the basics of statistical processing of research results)], Moskva, Agropromizdat, 1985, 351 p. (in Russ.).
3. Epifantsev V. V., Osipov Ya. A., Vaitekhovich, Yu. A. Soshniki dlya vyrashchivaniya ekologicheski bezopasnoi soi [Coulters for growing sustainable soybeans]. Sel’skohozyajstvennye mashiny i tekhnologii. – Agricultural machinery and technology, 2020; 14 (3): 59–65 (in Russ.).
4. Puponin A. I. (Eds.). Zemledelie [Agriculture], Moskva, KolosS, 2002, 552 p. (in Russ.).
5. Epifantsev V. V., Panasyuk A. N., Osipov Ya. A., Vaitekhovich Yu. A. Optimal'naya shirina polos pri mow-till dlya nakopleniya organiki i urozhainosti soi [Optimal Mow-till strip width for organic accumulation and soybean yield]. Sibirskij vestnik sel'skohozyajstvennoj nauki. – Siberian Herald of Agricultural Science, 2020; 50 (4): 13–22 (in Russ.).
6. Panasyuk A. N., Epifantsev V. V., Osipov Ya. A., Sakharov V. A., Demko A. N., Orekhov G. I. Osnovnye elementy i sredstva mekhanizatsii biologizirovannoi bezotkhodnoi tekhnologii vyrashchivaniya soi v Amurskoi oblasti [The main elements and means of mechanization of biologized waste-free soybean cultivation technology in the Amur Region]. Maslichnye kul'tury. – Oilseeds, 2019; 4 (180): 61–69 (in Russ.)
7. Kosinskii V. S. (Eds.). Osnovy zemledeliya i rastenievodstva [Fundamentals of agriculture and crop production], Moskva, Kolos, 1980, 335 p. (in Russ.).
8. Epifantsev V. V., Panasyuk A. N., Osipov Ya. A., Vaitekhovich Yu. A. Efficiency of tank mixture of herbicides reducing wee dines and increasing the productivity of soybean crops. International Journal of Engineering and Advanced Technology, 2019; 1 (9): 1451–1455.