我们的重点在堆肥是创造腐殖质。
地球表面含有腐殖质和被分解的岩石的部分。
The part of the earth's surface consisting of humus and disintegrated rock.
各种植物残体所形成的腐殖质，其性质基本相同。
Various kinds of humus derived from different plant residues are basically the same in nature.
各种植物残体所形成的腐殖质，其性质基本相同。
Various kinds of humus derived from different plant residues are basically the same in nature.
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