农民在泛滥平原上种植作物，因为土壤肥沃。

Farmers plant crops on the floodplains because of the fertile soil.

由于土壤肥沃，三角洲地区对农业至关重要。

The delta region is crucial for agriculture due to its fertile soil.

北美草原土壤肥沃，许多大草原已经改为农田。

Because North American grasslands have such fertile soil, most of the natural landscape has been converted to farmland.

Cindy Haynes表示，土壤肥沃就只需少量或不施肥。

Cindy Haynes says little or no fertilizer is needed in fertile soils.

这是自古以来，让土壤肥沃，使之能够抚育人类文明的方法。

It's what made it possible for fertile soils to be able to support human civilizations since time immemorial.

地上的树叶腐烂后会使土壤肥沃。

The leaves on the ground decay and enrich the soil.

树叶在森林地面腐烂，使土壤肥沃。

The leaves rot on the forest floor, enriching the soil.

曹县属黄河衡积平原，地势平坦，土壤肥沃。

Land resource Cao County belongs to the alluvial plain of Huanghe, the terrain is smooth, the soil is fertile.

草原土壤肥沃，几乎所有的东西都能种。

Grassland soil is rich, and almost anything can be grown there.

农民关心的是保持土壤肥沃并且免受病害.

They focus on keeping their soil rich and free of disease.