5, long-term application, loosen the soil porosity, reduce soil compaction, increase soil fertilizer conservation, water retention.
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Results showed that long term application of NPK fertilizers or manure could increase soil biomass-N, especially the effect of manure on biomass-N was obvious.
结果表明,长期施用有机肥或化肥均能增加土壤生物量氮数量,尤以有机肥的作用明显。
Long term application of the fertilizer will supplement the soil with organic matter and the heavy metals in the fertilizer wil not pollute the soil environment.
长期施用,可补充土壤中有机质,且肥料中重金属元素不会引起菜地环境的污染。
They start with duplicate fields and methods - not good in the long term when the application might need to change.
它们从重复的字段和方法开始—从长远来看,不利于应用程序作出更改。
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