FIELD: agriculture; machine building.SUBSTANCE: invention relates to agricultural machine building. Proposed is a meliorative fertilizer containing a hopper with a dosing body installed in it in the form of an auger screw, a casing of the ameliorants and fertilizers transport channel, and having sowing openings. Hopper has inclined side walls, between which a feeding belt conveyor is mounted with arch destructors in the form of arcuate projections, placed on the belt conveyor surface in staggered order. Casing lower part has mineral fertilizer sowing openings, under which the guiding shield is mounted, coupled with loosening-filling up drum, which is a cylinder, on the outer surface of which loosening teeth are fixed, made by parabolic curves, facing with concave downwards and placed on the cylinder outer surface in staggered order. In the cross section, the loosening teeth have tapers, which are conjugated to the loosening tooth back wall by hyperbolic curves.EFFECT: invention provides increased reliability
