in high productivity field, a well-distributive design was applied in the field experiment to set up the statistical model in this paper, which described the quantity relations between 6 factors(fertilizers, sowing date and density) and the yield of winter wheat in the high productivity field. The highest yield of the model was obtained by simulating the model.The model was analysed and it was clear that the base p. K. N. would have a negative effect on the yield of winter wheat in high productivity field a...