Substantiation of rational parameters of seed distributor for subsoil broadcast seeding

Abstract

One of the most important prerequisites for increasing crop production is the creation of conditions for the growth of each individual plant already at the stage of seeding. This may be achieved with such distribution of seeds over the area which will provide each seed with the necessary zone of nutrition especially in areas with insufficient soil moisture. To grow cereal crops in these areas, the technology of in-soil broadcast seeding and the corresponding machines have been developed. In seed drills for such seeding, seed distribution over the field is carried out with the help of special distributors of different designs installed under the coulter foot. However, the successful application of many existing seed drills for strip sowing is hindered by their essential disadvantage - uneven distribution of seeds over the strip area. The rational design parameters of the developed seed distributor of the tine coulter of the seeder type SKP-2.1 “Omichka” ensuring qualitative distribution of seed over the area at strip seeding are experimentally determined. The parameters of the distributor are obtained with the method of full factorial experiment with the help of the corresponding mathematical model of uniformity of seed distribution over the area. In the original seed distributor the following parameters were optimized: L - length; H - height; b - width, mm and n - number of holes, pcs. Visualization of two-dimensional response surfaces of the obtained mathematical model allowed determining the rational parameters of the spreader.