Active compound microbial fertilizer and preparation method thereof

The invention relates to the technical field of agricultural fertilizers, and particularly discloses an active compound microbial fertilizer and a preparation method thereof.The active compound microbial fertilizer is prepared from, by weight, 15-40 parts of nitrogenous fertilizer, 8-15 parts of phosphate fertilizer, 5-10 parts of potash fertilizer, 30-50 parts of furfural residues, 5-10 parts of animal waste, 12-30 parts of activated humic acid and 3-5 parts of microbial powder; 10 to 15 parts of biochar and 50 to 60 parts of water; by adjusting the variety and the mixing amount of the raw materials, after the obtained active compound microbial fertilizer is applied to corn, the yield of the corn is remarkably improved, the highest organic matter content, the highest alkali-hydrolyzable nitrogen content, the highest available phosphorus content and the highest available potassium content in soil are 44.873 g/kg, 82.901 mg/kg, 84.734 mg/kg and 602.764 mg/kg respectively, the nutrition of the soil is improved,