minimum irrigation rate

例句：

1. 1. The minimum irrigation rate is set to ensure that crops are watered only when necessary.
   最小灌溉率被设定为确保只在必要时给作物浇水。
2. 2.To maintain soil health, farmers should aim for a minimum irrigation rate of 50%.
   为了保持土壤健康，农民应该力求达到50%的最小灌溉率。
3. 3. The government has introduced new regulations to reduce the maximum and minimum irrigation rates for industrial plants.
   政府已经引入了新的法规，以减少工业工厂的最大和最小灌溉率。