60%-70% of the organic matter in soil is in the form of soil ( ) .
A、humus;
B、freequality;
C、mineralsubstance;
D、blacksoil
发布时间：2025-05-27 02:11:30
请在 下方输入 要搜索的题目：
推荐参考答案 (
由 搜搜题库网 官方老师解答 )
答案：
相关试题
- 1.60%-70% of the organic matter in soil is in the form of soil ( ) .
- 2.Soil pH has a significant effect on the form of heavy metals.
- 3.Desert soil is a ( ).
- 4.土壤肥力 soil fertility
- 5.Soil is an organized mixture of __________. （ ）
- 6.Please try to briefly introduce two research technology and approaches applied to increase soil organic
- 7.Soil erosion was （ ） by the planting of trees in these areas.
- 8.Soil erosion was ____ by the planting of trees in these areas.
- 9.What percentage of soil is made up of pores?（ ）
- 10.Factors affecting the diffusion of pesticides in soil include:
