Primary Study of Soil Nutrition Spatial Distribution Circumstance of Typical Farms in North Xinjiang

36 soil samples were sampled in Kuitun Farm and soil alkali hydrolyze N,soil available P,soil available K,Soil available Zn and soil organic matter content were tested in the study.Results indicate that all soil nutrition is with medium to high intensity of spatial self-correlation.Among several models,Kriging exponential model is the best model to predict soil nutrition spatial variability.Spatial prediction indicate that spatial variability is bigger in soil alkali hydrolyze N,soil available P and soil organic matter but in soil available K and soil available Zn,the spatial variability is small.