土壤腐殖物质一直是土壤学和环境学领域的研究热点。
Soil organic matter(SOM) is always a research focus in the soil and environmental science.
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.
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.
腐殖物质(主要组成为腐殖酸)是自然界中分布最为广泛的有机质，占土壤、水圈、生态系统中总有机质含量的50 ~ 80%。
Humic substances, the most widespread organic compounds in nature, account for 50 ~ 80 percent of the total organic compounds in the soil, hydrosphere and ecosphere.
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.
由于纯秸秆分解产生的腐殖物质，没有土壤来保持，其可提取腐殖物质的相对含量最低（PS100）。
Because of the organic-matter decomposed by the pure stalk have not any soil to keep up, the relative content of organic-matter that can be distilled is the lowest(PS100) .
通过盆栽试验研究了不同腐殖酸物质对土壤有机结合态汞、全汞含量及土壤汞生物有效性的影响。
A pot experiment was conducted to study the effects of different humic acid materials on organic combined mercury and total mercury contents in soil and the biological availability of soil mercury.
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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