Abstract
One of the ways to increase the yield of grain crops in the Northern Kazakhstan within the modern cultivation technologies is the use of subsoil-broadcast sowing. For doing so, the quality of compaction and rolling of the top seed soil layer plays an important role in the formation of the future harvest. In this regard, this article is devoted to the study, improvement and development of new operating tools of the seeder packing wheels for subsoil-broadcast sowing. The purpose of the study is to increase the efficiency of subsoil-broadcast sowing of grain crops. Objectives: development of a new improved packing wheels and carry out a comparative analysis of the operation of seeders and their packing wheels. A new improved two-row wedge typed packing (compacting) wheels are proposed. A comparative analysis of the operation of stubble seeders and their operating tools of packing wheels, widely used for subsoil-broadcast sowing in the Northern Kazakhstan within the modern cultivation technologies of grain crops, was carried out. The technological processes of packing and compaction of the top seed soil layer with this sowing method was considered and the main advantages of existing serial operating tools and disadvantages of proposed operating tools of improved packing wheels were identified. The use of the proposed packing wheels during grain crops sowing contributes to the emergence of even stands due to the creation of favorable conditions for the growth and development of plants, which, consequently, will have a positive effect on increasing the yield.