Organic biological fertilizer auxiliary agent and preparation method thereof

The invention provides an organic biological fertilizer auxiliary agent and a preparation method thereof, and belongs to the technical field of fertilizers, wherein the organic biological fertilizer auxiliary agent comprises, by weight, 20-25 parts of a plant fermentation broth, 5-10 parts of wheat bran, 10-15 parts of fungus residue, 10-15 parts of lees, and 5-10 parts of a soil improving agent.According to the present invention, Eclipta prostrata, Juncus effusus L, couchgrass root, sugarcane and pericarp are subjected to mixed fermentation, and filtration concentration is performed to obtain the plant fermentation broth, such that the effective component of the auxiliary agent is improved; by adding the fungus residue, the antibacterial ability of crops can be improved, the structure ofsoil can be adjusted, and the utilization rate of the fertilizer can be improved; by adding the lees, the antibacterial ability, the disease resistance and the pest resistance of crops can be improved, and the quality of crop