题目内容

Soil humus including humin, humic acid and fulvic acid.

查看答案

搜索结果不匹配？点我反馈

更多问题

There is a “trade off” relationship between soil water and soil air.

The nutrient will release during the SOM humification process.

For different systems, the sources of SOM are different.

______ refer to the newly-produced and accumulated materials during soil formation, such as iron discs, iron, manganese and lime concretions, coating and saline spots. The new formations are very important characteristics to judge the nature, composition, and genesis of the soil.