Whereas the K content increased compared to CK.

钾含量则高于相应的对照。

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P had more important effects on corn qualities than K. Compared with CK, long-term N-applying only could improve the corn nutrition, but decrease the flour ash content and starch viscosity.

长期单施氮肥较不施肥的对照（CK）玉米籽粒营养品质有一定的改善，但籽粒粗脂肪含量和淀粉粘度有不同程度的下降。

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