这个生物质是在一个连续的分解状态下，最后生成了一种半稳定的物质叫做腐殖质。
This biomass material is in a continuing state of decomposition, ultimately becoming that semi-stable material called humus.
根据腐殖质与矿物质土壤的结合程度、分解作用中所含的有机物类型以及原有的植被，腐殖质可区分为几个类型。
Humus is classified according to how well it is incorporated into the mineral soil, the types of organisms involved in its decomposition, and the vegetation from which it is derived.
腐殖质是已知能够覆盖滤膜的物质。
在这种堆肥化过程中，有机物由不稳定状态转化为稳定的腐殖质物质，用作肥料和改良土壤。
During the process the organic materials will be turned to the stable humus, which can be used as fertilizer and amend for the plant soil.
可见，土壤是石粒和曾经是活体的物质的混合物。表土中这种曾是活体的东西叫做“腐殖质”。
SO the topSOil is bits of rock mixed with things that are once alive. These things in the topSOil that were once alive are called humus.
腐殖质是已死的、腐烂中的有机物质。而不是无机肥料。
Humus is dead, decaying organic matter. NOT inorganic fertilizer.
腐殖质：土壤中无生命的、细小的有机物质。
Humus: Nonliving, finely divided organic matter in soil, derived from microbial decomposition of plant and animal substances.
腐殖质：土壤中无生命的、细小的有机物质。
Humus: Nonliving, finely divided organic matter in soil, derived from microbial decomposition of plant and animal substances.
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