Traditional slash and burn farming methods have exhausted the soil.

刀耕火种的传统耕作方式已经使土壤枯竭了。

《柯林斯英汉双解大词典》

This is especially so in desperately poor countries, where residents in the countryside slash and burn forests each growing season to clear space for farming.

在极度贫困的国家更是如此，那里的农村居民在每个生长季节都要砍伐和烧毁森林，来为农业腾出空间。

youdao

Slash-and-burn farming can be good for soils provided it doesn't completely burn all the vegetation, and leaves behind charred wood.

刀耕火种的耕作方式对土壤是有好处的，只要它不完全烧掉所有的植被，只留下烧焦的木头。

youdao