The superiorities and characteristics of organic manure have been illustrated in detail in this paper. The combination of organic manure with chemical fertilizer is necessary.
本文详细阐述了有机肥料的优越性及其特点，论证了有机肥料与化肥结合的必要性。
However, the combination of farm yard manure, straw and chemical fertilizer had different effects on different soil enzymes.
而有机肥、秸秆和化肥之间的配合施用处理的土壤酶活性表现不一致。
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