Macromolecular quick-dissolving fertilizer for vegetables and preparation method thereof

The invention discloses a macromolecular quick-dissolving fertilizer for vegetables and a preparation method thereof, and belongs to the technical field of chemical fertilizers. The macromolecular quick-dissolving fertilizer is prepared from the following raw materials of urea, potassium dihydrogen phosphate, potassium sulfate, boron sulfate, magnesium sulfate, calcium sulfate, humate, water-soluble chitosan, a synergizer, an anti-caking agent and a promoter, wherein the synergizer is prepared by mixing polyaspartic acid, pullulan polysaccharide and potassium fulvic acid according to a ratio of 1:(2 to 4):(4 to 6); the anti-caking agent is prepared by mixing pullulan-polyglutamic acid crosslinking polymer and methyl naphthalene sulfonic acid sodium salt according to a weight ratio of 1:1;the promoter is prepared from polyacrylamide, fatty alcohol polyoxyethylene ether sodium sulfate, and imide disuccinate tetrasodium according to a weight ratio of 0.8:1:1. The macromolecular quick-dissolving fertilizer has th