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系统分析了免耕对土壤N、P、K、S、微量元素以及 pH值的影响 ,并提出了N、P、K肥和石灰、石膏的施用方法
The effects of no-tillage on soil N, P, K, S, trace elements and pH value were systematically analyzed. The application methods of N, P and K fertilizers and lime and gypsum were proposed