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关于腐殖质形成的概况如下:木质素、碳水化合物是微生物的主要碳源,这些物质首先被胞外酶分解成较小的单元,其中的可溶性单元被微生物细胞吸收,它们有一部分在细胞内转化为酚类、醌类物质。形成的酚醌类物质连同氧化酶被排除体外,在环境中按自由基机制发生聚合反应,本文阐述了富啡酸(FA)的形成过程,并得出结论,富啡酸和胡敏酸二者的区别只是聚合程度不同,富啡酸比胡敏酸并没有更多的脂族碳链。
An overview of humus formation follows: Lignin, a carbohydrate that is the major carbon source of microorganisms, is first broken down by extracellular enzymes into smaller units in which soluble units are taken up by microbial cells and some of them are converted intracellularly into Phenols, quinones. The phenolic quinones formed together with the oxidase are excluded in vitro and polymerize in a free-radical mechanism in the environment. This article describes the formation of fulvic acid (FA) and concludes that fulvic acid and humic acid di The only difference is that the degree of polymerization, fulvic acid than humic acid and no more aliphatic carbon chains.