pit transplanting

例句：

1. 1. Pit planting is a method of growing plants in the soil, where the roots are planted into the ground.
   坑洞种植是一种在土壤中种植植物的方法，根系被植入地面。
2. 2. The pit planting technique has been shown to improve soil fertility and reduce weed growth.
   坑洞种植技术已被证明可以提高土壤肥力并减少杂草生长。
3. 3. In this experiment, we used pit planting to test the effectiveness of different types of fertilizers.
   在这个实验中，我们使用坑洞种植来测试不同类型肥料的有效性。