METHOD FOR RESTORING SOIL FERTILITY Russian patent published in 2004 - IPC

FIELD: agriculture, soil science. SUBSTANCE: the present innovation deals with restoring fertility of low productive arable farming lands, oil-contaminated lands and erosiondangerous slopes. The suggested method deals with soil loosening, presowing rolling, sowing agricultural varieties, postsowing rolling. Primary soil treatment should be carried out in autumn due to shallow plowing, in spring it is necessary to apply NPK fertilizers, their dosage is calculated by removal of nutrients by the yield, so, the ground should be cultivated, rolled to perform sowing of phytomeliorant varieties, such as sweet clover, rape, winter cress, mustard, oil radish, moreover, plants with biennial cycle should be sown under annual grasses' cover followed by rolling. Green mass of phytomeliorants should be applied as green manure fertilizer. Mineral fertilizers such as nitrogen, phosphorus and potassium are applied for planned yield in spring under cultivation by taking into account the content of these nutrients in soil. The present method enables to restore fertility of low-productive soils, erosion-dangerous parts and oil-contaminated soils. EFFECT: higher efficiency of restoration. 2 ex, 4 tbl