THE EFFICIENCY OF FERTILIZERS ON LEACHED CHERNOZEM KANSK FOREST-STEPP KRASNOYARSK REGION
In the seventh rotation crop rotation ((pure steam, green manure couples) - wheat - barley - annual herbs - wheat - oats) on leached Chernozem fertilizers increase the productivity of crop rotation on 40 - 50 %. The greatest payback 1 kg d.v. provide nitrogen fertilizers - 43 - 46 kg. grain, payback 1 kg. d.v. of phosphate fertilizers constitute 27 kg grain. Application N40, N80, P20 (in rows), N40P20K20 causes the annual deficit of nitrogen 13 - 40 kg., on phosphorus 4 - 22 kg., on potassium 32 - 37 kg/ha. The application of green manure reduces the deficit elements power. Prolonged application full fertilizers (N40P20R20) increases the amount of mobile potassium in soil since 16.9 to 19.4, phosphorus - since 20,9 to 25,4 mg/100 g soil. Humus content and nitrification capacity soil has not changed. Introduction manure not affected on content humus, but determined increase pentoxide phosphorus (r = 0.8), but also improved nitrification capacity of the soil (r =0.76).