Soil micro-ecosystem的用法和樣例：
例句
- Robinia pseudoacacia was better than Pinus tabulae formis in enhancing the soil fertility.
在樹(shù)齡相同的條件下刺槐林對土壤培肥效應優(yōu)于油松林。 - Illite belongs to clay minerals, it has absorbent ability and higher potassium, which can improve the soil fertility.
伊利石屬層狀粘土礦物，具有吸水性，含鉀較高，可以提高土壤肥效。
