... 关键词：长期定位试验；单施氮肥；土壤全磷；Olsen-P [gap=1390]Key words: long-term fertilization; single N fertilization; soil total phosphorus; Olsen-P ...
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单季不施氮肥 seasonal withdrawal of nitrogenous fertilizer
·2,447,543篇论文数据，部分数据来源于NoteExpress
单施氮肥的土壤，速效钾、缓效钾含量均降低，全钾含量变化不明显。
Available potassium and slow-released potassium contents were decreased, and total potassium content was changed insignificantly in the soil of mono-application of nitrogen fertilizer.
肥料类型中单施氮肥或磷肥，病害严重，增施有机肥与氮磷钾配方施肥，可减轻病害；
UsingN, orp-manure only can emphasize the disease while using more organic manure and using N, P and K-manure in right proportion can lighten it.
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。
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.
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