Effect of fertilizer and green-manure on reproduction of fertility in sod-podzolic soils
Application of the increased doses of fertilizers (N <sub>60 60</sub>К <sub>60</sub> + a manure of 60 t/hectares) and covering a green manure of legume-grass mixture allow to increase the content of mobile phosphorus - on 13,6-16,2 %, an exchangeable potassium - on 12,4-19,4 %, and organic substance - on 16,0-17,3 relative %, yield spring wheat in 1,9 times at the upset sod-podzolic soils. This variant is taken as resoiling of technologies the upset soils. This variant provides increase offertility of the upset soils with rather low expenses.