“enrich the soil”簡單造句，enrich the soil造句子

The peasants ploughed the weeds in the field back to enrich the soil.

It is important to enrich the soil prior to planting.

Then he saw a field that had just been burned by farmers to enrich the soil.

The chief work of the earthworms is to enrich the soil. When they make their houses, they fill their long bodies with the earth, and carry it to the top of the ground. There they pile it in heaps, called worm-casts.

It produces leaves that farmers can feed to cattle, and it has roots that enrich the soil with nitrogen. The trees protect crops from wind and prevent soil erosion.