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.

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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.

youdao