Abstract:
In this paper, based on the experiment on corn “3414”, with nitrogen, phosphorus and potassium as the experimental factors, and with the yield of maize as objective function, we determined the optimal ratio of nitrogen, phosphorus and potassium, in the dry land of Xinfu district. The result shows that the optimal fertilization amount of nitrogen was 138.15kg/hm
2, P
2O
5 was 100.65kg/hm
2 and K
2O was 145.35kg/hm
2, and the yield accordingly was 9694.35kg/hm
2.