mullocking

例句：

1. 1. The farmer used mulch to improve soil quality.
   农民使用堆肥来改善土壤质量。
2. 2.Compost is a natural fertilizer that can be used in gardening.
   堆肥是一种天然肥料，可以在园艺中使用。
3. 3. Green manure is often used as a cover crop to protect the soil from erosion.
   绿肥通常用作覆盖作物，以保护土壤免受侵蚀。