Fertilizer Response and Optimum Application Rate of NPK for‘Guangliangyou 676'as Post-vegetable Rice

We carried out the research on the NPK fertilizer response of the super high-yielding rice variety‘Guangliangyou 676'grown on vegetable field with ‘3414'the optimum regression design.The results indicated that N application could significantly increase the yield of rice in the lower alkali-hydrolyzable nitrogen,but rich available phosphorus and potassium in the vegetable field.P,K application could improve it to some degree.According to the imitative results of regression equation,the economic application rates of N,P2O5 and K2O were103kg·hm-2,41kg·hm-2and 103kg·hm-2,respectively.The proper ratio of N∶P2O5∶K2O was 1∶0.4∶1in the vegetable field.