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本文探讨了氮钾肥对夏花生的增产效应及经济施用量 .结果表明 ,氮、钾对夏花生均有稳定的增产作用 ,而且 ,氮肥增产效果比钾肥大 ,同时 ,氮、钾肥施用量过大时均可造成减产 .氮钾之间交互效应不明显 ,通过建立二元二次方程 ,确定了氮、钾肥经济最佳施用量 ,为纯N 93 0kg/hm2 、K2 O 5 3 5 5kg/hm2 ,此时 ,施肥效益最高 ,为 1 5 1 3 2 5元 /hm2
In this paper, the effects of nitrogen and potassium fertilizers on summer peanut yield and economical application were discussed.The results showed that both nitrogen and potassium could increase the yield of summer peanut steadily, and the effect of increasing nitrogen fertilizer was more than that of potassium fertilizer. Meanwhile, The production of nitrogen and potassium could be reduced significantly.The interactive effect between nitrogen and potassium was not obvious. By establishing the binary quadratic equation, the economic best application rates of nitrogen and potassium fertilizer were determined, which were pure N 93 0kg / hm2 and K2 O 5 35kg / hm2 At this moment, the highest benefit was fertilization, which was 153125yuan / hm2