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利用311饱和最优设计方法,推算玉米氮磷钾推荐施肥量。研究结果表明:最高产量的氮磷钾肥组合为:N225kg/hm2、P2O5150kg/hm2、K2O180kg/hm2;最高收益的氮磷钾肥组合为:N205.7kg/hm2、P2O5150kg/hm2、K2O148.9kg/hm2。
Using 311 saturation optimal design method, calculate the recommended fertilization amount of N, P and K in maize. The results showed that the highest yield NPK combination was N225kg / hm2, P2O5150kg / hm2 and K2O180kg / hm2. The highest yield NPK combination was N205.7kg / hm2, P2O5150kg / hm2 and K2O148.9kg / hm2.