森林土壤肥力以维持和恢复自然肥力为主，人工施肥为输。

Forest soil fertility mainly relies on maintaining and resuming natural fertility and combines with artificially applying fertilizer.

youdao

在台风来临前对虾池进行适当施肥，有利维持透明度及水质的稳定。

Fertilization before typhoon could keep transparency of desalting culture pond and stability of water quality.

youdao

推荐稻草还田及有机肥加化肥结构，是高产条件下维持土壤硫素肥力的较佳施肥结构。

Straw and organic matter plus chemical fertilizer constitutions are recommend as optimum to sustains and increase soil sulfur fertilization.

youdao