Effect of P and K Fertilizer Application on Yield and Economic Benefits of Rice

[Objective] To study the effect of P and K fertilizer application on the yield and economic benefits of rice.[Method] A field trial was conducted to investigate the effective tillering,grains of rice,rice yield and economic benefits under the seven treatments of N2K2+P0,N2K2+P1,N2K2+P2(N2P2+K2),N2K2+P3,N2P2+K0,N2P2+K1 and N2P2+K3.[Result] The P and K fertilizer application increased the effective tillering,total and effective grains of rice,and reduced the proportion of flat rice.The rice yield with the N2K2+P1,N2K2+P2 and N2K2+P3 treatments were 6.5%,5.2% and 4.4% higher than that in N2K2+P0 treatment,but the rice yield in K fertilizer applied was the same to that in the N2P2+K0 treatment.P fertilizer also increased the economic benefits of rice,but the influence of K fertilizer was less.[Conclusion] P and K fertilizer could increase the yield of rice,but their application amount should be reasonably controlled in the hilly areas.