Simulated composting was carried out to study the changes of biochemistry and chemical characteristics of the organic manure compost using labelled organic material and inorganic nitrogen fertilizer.

通过室内模拟堆制和同位素交叉标记，研究了以稻草和禽畜粪为主体材料的堆肥制作过程中的生物化学变化特征。

youdao

The technique was taught by aid workers who also showed the farmers how to fertilize with compost or manure.

VOA: standard.2009.12.10

Organic methods, which rely on crop rotation, manure and compost in place of fertiliser, are far less intensive.

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Solar panels sparkle on the barn roof, and cow manure becomes compost.

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Roundup Ready herbicides and nitrogen fertilizers replaced manure and compost.

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