THE EFFICIENCY OF FERTILIZERS ON LEACHED CHERNOZEM KANSK FOREST-STEPP KRASNOYARSK REGION

Ju.N. Trubnikov, T.I. Chlenova
Krasnoyarsk Research Institute on Agriculture of Russian Academy of Agrarian Sciences, Russia, Krasnoyarsk, Svobodniy prospect, 66

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Summary. 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).

Keywords: leached chernozem, the productivity of crop rotation, recoupment of fertilizers, balance, soil properties.