Through coating, wrapping, adding inhibitors, etc., the decomposition and release time of fertilizers are prolonged, which is beneficial to increase the utilization rate of fertilizer nutrients, so as to achieve the purpose of extending the effective period of fertilizers and promoting agricultural production.

Advantage:

1. Increase the utilization rate of chemical fertilizers and reduce the amount of chemical fertilizers.

2. Reduce the frequency of fertilization and save labor.

3. Reduce crop diseases and improve the quality of agricultural products.

Disadvantage

1. Not suitable for dry land and sandy land.

2. The residue of the wrapping agent may cause secondary pollution.