In this paper,an experimental study was conducted to compare and analyze the application amounts of nitrogen,phosphate,and potash fertilizers in the demonstration area of water saving transformation of Shijin irrigation area in Hebei province,which was used to determine the relationship between the application amount of fertilizer and yield of winter wheat.The results suggested that in order to ensure the yield of winter wheat above 6 750kg/hm2,the reasonable application amount is 210kg/hm2for nitrogen fert...