Abstract: The relationship between soil nutrient and spring wheat yield and optimum fertilization are studied．The results show that the yield and soil nutrient have a close relationship，especially the nutrients of soil organic and Hydrolysis N，but the effects of available P and available K are not very significant．There is a lack of N in particular，P in partial and K is very rich in soil．These results are in a good fit with the yield-nutrient sensitivity．The optimum fertilization of N is cut down 10％ than norma1．P is cut down 15％．