Novel brown phosphate fertilizer wrapping agent and preparation method thereof

The invention discloses a novel brown phosphate fertilizer wrapping agent and a preparation method thereof, and relates to the technical field of fertilizer wrapping agents. Heating and fully melting the petroleum asphalt; mixing the white oil, the coupling agent, the polyethylene wax, the wetting agent and the emulsifier, and heating to fully melt; and mixing the two materials, and continuously stirring to prepare the novel efficient coffee phosphate fertilizer wrapping agent. Petroleum asphalt is adopted as an anti-caking basic raw material, white oil and polyethylene wax have a synergistic effect, not only can resist adhesion, but also have a brightening effect, and the coupling agent, the wetting agent and the emulsifier are mutually matched and have a relatively strong synergistic effect, so that the coated phosphate fertilizer has adhesion resistance and wear resistance, and the appearance performance of a fertilizer product can be changed. The coating agent disclosed by the invention is used for coatin