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An important factor affecting the quality of planting material grown in forest nurseries is the method of sowing seeds. When sowing seeds, it is necessary to provide optimal conditions for the growth and development of plants by piece-uniform distribution in the sowing groove. To perform such a method of planting the design of a planter for large seed metering apparatus that provides a piece-uniform seeding of acorns. In order to study the influence of the parameters and modes of operation of the seeder for large-fruited seeds on the quality indicators of single-uniform acorn sowing, studies of the process of its work were carried out. As a result of the research, the constructive and technological parameters and operating modes of the seeder, with the sowing apparatus in the form of a conveyor chain equipped with cells with movable bars to regulate their depth, are justified. Installed the rational constructive-technological modes and parameters of seeder for large seeds for a piece-uniform seeding of acorns: the speed of movement of the sowing unit 0.12 m/s, forward speed of the seeder 0.28 m/s and depth of the location of the sowing unit 5 mm. the empirical dependence of the effect of the depth of the cell seeding device, speed of movement and forward speed of the seeder on the distance between the acorns in the seed furrow.

THE INFLUENCE OF PARAMETERS AND MODES OF OPERATION OF THE SEEDER FOR LARGE SEEDS ON THE AGRONOMIC PERFORMANCE OF CROPS OF ACORNS