；速效钾为0.147和0.133。Spatial distributions and relationship between available nitrogen, phosphorus, potassium and wheat yield in the Dantu area of Zhenjiang were analyzed by using geo-statistics and partial correlation analysis methods. Their spatial distribution maps were generated as well. The results showed that variables are all approximately normally distributed and have good spatial structure characteristics. Available nitrogen is closely related to wheat yield and 1000-grain weight, as their partial correlation coefficients are respectively 0.569 and 0.5. However, available phosphorus and potassium have little effect on wheat yield and 1000-grain weight. For their partial correlation coefficients are respectively 0.069, 0.284 and 0.147, 0.133. 