表土

例句：

1. 1. The farmers need to know the soil type for planting crops.
   农民需要知道土壤类型以便种植作物。
2. 2. The soil is rich in nutrients that plants need.
   土壤富含植物所需的养分。
3. 3. The soil quality affects the growth of plants and the yield of crops.
   土壤质量影响植物的生长和农作物的产量。