广播电视英语短句 第 335 课：有机盖土-2

Mulch is important to home gardens but also to farms. 盖土对家庭菜园很重要，对农场也是如此。

Farmers may keep the remains of maize or other crops on top of the soil. 农民们可以把玉米或其它农作物茬留在土壤表面。

The crop waste creates mulch. This practice is called conservation tillage. 农作物废物产生盖土。这种作法称为保土耕作。

Organic mulch protects but also improves the condition of the soil. It provides nutrients for plants. 有机物盖土保护且改善土壤状况，它为植物提供营养。

It also provides a good environment for earthworms and other helpful organisms in the soil. 它也为土壤中的蚯蚓及其它有益生物提供了很好的环境。