soil specific gravity

例句：

1. 1.Soil specific gravity is an important factor in determining the quality of soil.
   土壤特定重力是决定土壤质量的重要因素。
2. 2. The soil specific gravity affects the growth of plants and the yield of crops.
   土壤特定重力影响植物的生长和农作物的产量。
3. 3. To improve soil quality, farmers need to monitor soil specific gravity regularly.
   为了提高土壤质量，农民需要定期监测土壤特定重力。