Fertilizer not only improves crop yield

but also brings many problems. As the absorption of fertilizer by crops is a slow process

a large amount of fertilizer cannot be absorbed by crops in time

which causes environmental pollution. Therefore

effectively increasing the utilization rate of traditional chemical fertilizers can reduce environmental pollution. Coated controlled-release fertilizer can regulate the release rate of fertilizer nutrient under certain processes and conditions

significantly improve the utilization rate of fertilizers and reduce the serious environmental pollution caused by fertilizer loss. The membrane material of coated controlled release fertilizer is one of the key factors to determine the controlled release performance of fertilizers. In this paper the influence of the advantages and disadvantages of different membrane materials on the controlled release performance of fertilizers were compared and analyzed

and the nutrient release mechanism of coated controlled release fertilizers was explained. The problems in the practical application of coated fertilizers and the prospects of its future development were explained.