potassium ammonium nitrate

例句：

1. 1. This fertilizer is ideal for plants that need a high nitrogen content.
   这种肥料非常适合需要高氮含量的植物。
2. 2. The farmer applied the potassium ammonium nitrate to the soil to improve its fertility.
   农民向土壤中施用硝酸钾以提高其肥力。
3. 3. The plant's growth was significantly enhanced by the potassium ammonium nitrate.
   使用硝酸钾后，植物的生长显著提高。