黔西南玉米平衡施肥试验

Study on Balanced Fertilization in Maize in Qianxinan Region

为探索黔西南地区肥料施用对玉米产量的影响,确定N、P、K施用量及比例,按照肥料＂3414＂试验设计,开展了多个玉米平衡施肥试验。结果表明,黔西南地区玉米的施肥最佳方案为：纯N 240-270 kg/hm^2,P2O5105-135 kg/hm^2,K2O 90-120 kg/hm^2;对玉米产量的影响N肥最大,P肥次之,K肥最小。对西南地区玉米生产中推广科学施肥有积极的指导意义。

The＂3414＂experiment design was conducted in maize to study the effect of balanced fertilization on maize yield and confirm application amount and proportion of N,P and K fertilizer.The results showed that the optimum application combination was 240～270 kg/hm^2 pure N,105～135 kg/hm^2 P2O5 and 90～120 kg/hm^2 K2O,and N fertilizer had great influence on maize yield,followed by P and K fertilizer.The optimum application combination should be used in maize production in Qianxinan prefecture of Guizhou.