decomposition rate of soil organic matter

例句：

1. 1. The decomposition rate of the soil organic matter is a crucial factor in determining the quality of the soil.
   土壤有机质的分解速率是决定土壤质量的关键因素。
2. 2. The study found that the decomposition rate of organic waste can be significantly reduced by proper management practices.
   研究发现，通过适当的管理实践，有机废物的分解率可以显著降低。
3. 3.The decomposition rate of the soil organic matter is closely related to the amount of nitrogen and phosphorus available in the soil.
   土壤有机质的分解速率与土壤中氮和磷的可用量密切相关。