particulate organic nitrogen

例句：

1. 1. The soil is rich in particulate organic nitrogen, which is essential for plant growth.
   土壤富含颗粒有机氮，对植物生长至关重要。
2. 2. The fertilizer contains a high proportion of particulate organic nitrogen, which helps plants to grow better.
   这种肥料含有大量的颗粒有机氮，有助于植物更好地生长。
3. 3. In agricultural practices, the use of particulate organic nitrogen can significantly improve crop yields.
   在农业实践中，使用颗粒有机氮可以显著提高作物产量。