Yield formation of spring bread wheat on technological different in intensity backgrounds in crop rotation Middle Volga

In the long-term stationary experiment studied the effect of different technological backgrounds intensity on photosynthetic activity of plants, water and food regimes, grain yield of spring wheat. According to the research found that the best conditions for growing high yields of spring wheat are created using biological means of reproduction of soil fertility (placement in the rotation after a couple green manure and perennial grasses), thus obtaining the largest yield increase and payment nutrient fertilizers.