slash and burn cultivation

例句：

1. 1.The traditional slash-and-burn farming method is no longer suitable for modern agricultural practices.
   传统的砍伐和焚烧耕作方法已不适合现代农业实践。
2. 2. The government has implemented a policy to promote sustainable land use, which includes slash-and-burn cultivation.
   政府实施了一项政策，以促进可持续的土地使用，其中包括砍伐和焚烧耕作。
3. 3. In the past, slash-and-burn cultivation was common in many parts of Africa, but now it's being replaced by more sustainable methods.
   过去，非洲许多地区都采用砍伐和焚烧耕作，但现在这种方法正被更可持续的方法所取代。