Effects of Nitrogen and Phosphorus Fertilizer Amounts on Wheat Yield

At present，reasonably controlling amount of chemical fertilizer has become the only way for agricultural development.In order to effectively reduce amount of chemical fertilizer，improve soil fertility level and increase crop yield，effects of nitrogen and phosphorus fertilizer on wheat yield under different green fertilizer varieties were analyzed by field split plot experiment.Results showed that when nitrogen and phosphorus fertilizer were reduced to 120 kg N/hm2 and 80 kg P2O5/hm2 respectively，wheat yield could reach the highest value，which showed that this fertilization treatment had good application effect and value，and could be popularized in agricultural production.