Effects of Fertilizer N,P on Drip Irrigation Wheat Yield and Fertilizer Use Efficiency

The effects of fertilizer N,P on drip irrigation wheat yield and fertilizer use efficiency were studied by the field experiment.The results showed N,P fertilizer application could significantly increase the yield on drip irrigation wheat.Comparing the yield of the fertilization drip irrigation to conventional fertilizer with the same amount of fertilizer,fertilization drip irrigation could increase the yield.Insufficient amount of N and P,although could improve N agronomic efficiency and P agronomic efficiency,but significantly reduced the yield,and the trends of N and P partial factor productivity was same as the agronomic efficiency.While improving the wheat production with fertilization drip irrigation,also increased the fertilizer use efficiency.The N fertilizer use efficiency of fertilization drip irrigation was higher than the conventional fertilizer by three percentage point,the K was by four percentage point.Therefore,the rational fertilizer and fertilization drip irrigation effectively improved the yield and fertilizer use efficiency.