钾铵硝石

例句：

1. 1. This chemical is used as a fertilizer in agriculture.
   这种化学物质在农业中用作肥料。
2. 2. The potassium ammonium nitrate was mixed with water to form a solution.
   将钾铵硝石与水混合形成溶液。
3. 3. Potassium ammonium nitrate is a source of nitrogen for plants.
   钾铵硝石是植物氮源的来源。