粗腐殖质

例句：

1. 1. The soil is rich in organic matter, making it suitable for growing plants.
   土壤富含有机物质，适合种植植物。
2. 2. The plant's growth depends on the quality of the soil and the amount of organic matter present.
   植物的生长取决于土壤质量和有机物质的含量。
3. 3. The farmer used to use traditional methods to enrich the soil with organic matter.
   这位农民过去使用传统方法向土壤中添加有机物质以增加肥力。