soil class

例句：

1. 1.The soil class affects the growth of plants in different regions.
   土壤类型影响不同地区的植物生长。
2. 2. Different soil classes require different fertilizers to maintain optimal plant health.
   不同的土壤类型需要不同的肥料来保持植物的最佳健康状态。
3. 3. Farmers need to understand the soil class and its impact on crop yields to make informed decisions about planting and harvesting.
   农民需要了解土壤类型及其对作物产量的影响，以便做出明智的种植和收割决策。