soil porosity

例句：

1. 1.Soil porosity is a critical factor in determining the quality of agricultural soil.
   土壤孔隙度是决定农业土壤质量的关键因素。
2. 2. The study found that soil porosity had a significant impact on crop growth.
   研究发现，土壤孔隙度对作物生长有显著影响。
3. 3. In order to improve soil fertility, farmers need to increase soil porosity through organic matter addition.
   为了提高土壤肥力，农民需要通过添加有机物来增加土壤孔隙度。