In order to determine the suitable NPK account for this eugenic winter rape: Xiangzayou763, field and pot experiment was set up during the year 2008-2010 and optimized the ratio and dose of NPK by the laboratory test method during harvest period, in which the yield in all treatments and economic benefits would be investigated. The result shows that with NPK ratio at (N:P2O5:K2O) 1:0.50:0.50, fertilizers N, P2O5, K2O supply at 180 kg/hm2, 90 kg/hm2, 90 kg/hm2, it is the best suitable way for NPK usage, with which winter rape takes the largest oilseed yield, reaching 2231.13 kg/hm2. On the yield...
