Formation of soil fertility under the influence of fertilizers and growing the next generation technologies in the rotation of the Middle Volga steppe

The results of investigations in the three years of experience. When the content of common chernozem 4,35-4,52% of humus to maintain the sufficient balance is necessary to introduce 6.7 - 8.0 t / ha of manure annually. The introduction of green manure crops in the rotation, perennial herbs, the use of straw as fertilizer increases compared to grain-steam crop rotation content of nitrate nitrogen in the soil for 32-35% of available phosphorus in the 7.0-7.6% potassium stabilizes mode. Long-term use modern technological systems, compared with traditional technology, availability of soil nitrogen levels, increases levels of available phosphorus in the 14,1-17,8%, exchangeable potassium on 14,9-22,7%. The use of differentiated treatments provide, compared with the control, a significant reduction in the mineralization of humus layer 0-30 cm to maintain soil fertility ordinary chernozem recommended the introduction of a green manure crop rotations, perennial grasses, use of straw as a fertilizer. In grain-steam and grain-stream-row crop rotations and production offers a new generation of technological systems that are based on differentiated subsurface soil treatment using as fertilizer chopped straw and SRR (stubby root residues).