fertilizer quantity regulator

例句：

1. 1. Thefertilizer quantity regulator is used tocontrol the amount of fertilizer addedto the soil.
   肥料量调节器用于控制添加到土壤中的肥料的量。
2. 2. The farmeruses a fertilizer quantity regulator toensure that the soil is properly balanced.
   农民使用肥料量调节器来确保土壤得到适当的平衡。
3. 3. The fertilizer quantity regulatorhelps farmers monitor the effectiveness of their fertilizer applications.
   肥料量调节器帮助农民监测他们的肥料应用的有效性。