With the development of coated fertilizers and its coated materials
the environmental response coated fertilizers have attracted extensive attention of researchers in order to meet the needs of more agricultural production environments. With the characteristics of intelligent response and slow and controlled release
the environmental responsive coated fertilizers can respond to specific stimulation signals such as pH
temperature
light and magnetic field in the fertilization environment
so as to change the physical or chemical structure of coated materials
and control the release rate of fertilizer nutrients. Therefore
the research and development of environmental responsive fertilizers has certain practical significance. Based on the practical application of fertilizers
this article reviews the preparation and effects of pH responsive coated fertilizers
temperature responsive coated fertilizers and magnetic responsive coated fertilizers.