3 sentences

1. 这种化肥含有大量的磷。

   zhè zhǒng huà​féi hán​yǒu dà​liàng de lín.

   This fertilizer contains a large amount of phosphorus.

   Source: Dong Chinese Dictionary

2. 农民们正在给庄稼施化肥。

   nóng​mín men zhèng​zài gěi zhuāng​jia shī huà​féi.

   The farmers are applying chemical fertilizer to the crops.

   Source: Dong Chinese Dictionary

3. 这种化肥的主要成分是硫酸铵。

   zhè zhǒng huà​féi de zhǔ​yào chéng​fèn shì liú​suān ǎn.

   The main component of this fertilizer is ammonium sulfate.

   Source: Dong Chinese Dictionary