The average annual reduction in the sowing machine park in 2015-2018 amounted to 5.4 thousand units, so there is a problem of replenishing the missing equipment. At the same time, the main urgent issues requiring solution are the improvement of sowing machines. The materials on the provision of farms with sowing equipment in 1990-2018 and its production in 2010-2018 are considered, the designs for improving sowing machines are proposed. A decrease in the sown area for grain and leguminous crops in 1992-2018 was revealed by 1.3 times – from 61.9 to 46.3 million hectares and an increase by 5.5 times in the annual load on a grain seeder from 133 to 733 hectares per machine. Availability of grain seeders have been estimated for 2018 is about 63 thousand units, the total demand is calculated – about 196 thousand of reference units. A grain-fertilizer seeder with disc coulters of the SZ-3.6 type was taken as the reference unit of the sowing machine. The range of sowing equipment has been analyzed. The diagram of a single-disc-anchor coulter of strip sowing for sowing complexes is presented. Examples of effective use of single-disc anchor coulter instead of paw coulters openers are given. Described is a competitive single-disc coulter working body of strip sowing for use on sowing complexes.