Effects of N, P and K Balance Fertilizer on Wheat Yield in Guizhou with High Elevation

The field experiment was tested to investigate effects of N,P and K balance fertilizer on yield of wheat planted in areas with high elevation.The results showed that the potash fertilizer was the most important fertilizer for wheat yield among N,P and K fertilizer,and the wheat yield with applying K fertilizer could increase 446 ~ 1095 kg/ha and the increase range was up to 15.5%~38.1%,which increased the income of 806.00~1854.50 yuan/ha.The optimum ratio of N,P and K fertilizer for wheat planted in high elevation was 60 kg/ha of pure N,32 kg/ha of P2O5and 122 kg/ha of K2O.