nitrogen-organic matter ratio

例句：

1. 1.The soil's nitrogen-organicmatter ratio is crucial for plant growth.
   土壤的氮与有机物质的比率对植物生长至关重要。
2. 2. The ratio of nitrogen toorganic matter in the soil affects the growthof crops.
   土壤中氮与有机物质的比例影响农作物的生长。
3. 3. The researcher foundthat the proper balance of nitrogen and organicmatter was essential for optimal plant health.
   研究人员发现，氮和有机物质的适当平衡对于植物的健康至关重要。