EFFICIENCY OF MINERAL FERTILIZERS IN A LINK OF A GRAIN CROP ROTATION AT DIFFERENT SYSTEMS OF TILLAGE OF SOD-PODSOLIC SANDY

Abstract

On sod-podsolic sandy soil influence of ways and machining tillage on efficiency of mineral fertilizers is studied. It is established, that application Р60К120 provides efficiency of a link of a crop rotation oats-leguminous a mix-spring wheat of fodder units of 31,1-34,2 ts/hectares and a recoupment of fertilizers of 3,2-3,9 fodder units. Decrease in efficiency of fertilizers is observed on superficial disk processing of soil. Entering on the average for a link of a crop rotation of nitrogen of fertilizers of 50 kg/hectares provides gathering of fodder units of 44,3-47,4 ts/hectares. The increase in doses of nitrogen to 80 and 110 kg/hectares raises efficiency in relation to a fosforno-potash background accordingly on 19,2-20,5 and 22,3-24,4 ts/hectares of fodder units. Efficiency of nitric fertilizers on superficial disk tillage more low in comparison with moldboard, chisel and the minimal tillages.