Methods Of Biologization Of Grain-Grass Crop Rotations And Their Influence On Fertility Of Soddy-Podzolic Soil Of The Forest Zone

Abstract

On soddy-podzolic soils of the forest zone of the European part of Russia, grain-grass crop rotations are most common for the production of voluminous fodder, food and fodder grain [1,2]. In such crop rotations, the link of perennial grasses is the main factor in the reproduction of soil fertility and the production of high-quality voluminous fodder. Improvement of the grass-field link of such crop rotations based on the cultivation of new species and varieties is an urgent scientific and practical task [3,4,5].An important way to reduce the cost of reproduction of soil fertility in grain-grass crop rotations is the maximum use of plant residues, including straw and green manure crops, which makes it possible to exclude the use of organic fertilizers on certain arable land or, if necessary, to conduct a dung-free economy [6,7,8]. Improvement of the link of perennial grasses, saturation of crop rotations with legumes, maximum use of plant residues and green manure as organic fertilizers allows to reduce the cost of reproduction of soil fertility, to produce high-quality voluminous and concentrated feed [9,10].