nitrogen budgets

例句：

1. 1. The agricultural industry uses nitrogen budgets to determine how much fertilizer to use.
   农业行业使用氮预算来确定应使用多少化肥。
2. 2. The research team has developed a new method for calculating nitrogen budgets in ecosystems.
   研究团队开发了一种新的方法来计算生态系统中的氮预算。
3. 3.The nitrogen budget is crucial for maintaining the health of soil and plants.
   氮预算对于保持土壤和植物的健康至关重要。