potasium fertilizer

例句：

1. 1.The soil in the garden needs potassium fertilizer to keep it healthy.
   花园里的土壤需要钾肥来保持健康。
2. 2.Potassium fertilizer is essential for plant growth.
   钾肥对植物生长至关重要。
3. 3.The farmer used potassium fertilizer to improve the yield of his crops.
   农民使用了钾肥来提高作物的产量。