NOVELTY - Composite microbial fertilizer comprises 20-30 pts. wt. microorganism inoculant, 5-10 pts. wt. biological carbon, 20-30 pts. wt. urea, 5-9 pts. wt. diammonium phosphate, 3-8 pts. wt. potassium dihydrogen phosphate, 5-10 pts. wt. potassium chloride, 1-5 pts. wt. boric acid, 1-6 pts. wt. magnesium sulfate, 1-2 pts. wt. ferrous sulfate, 1-2 pts. wt. amino acid chelated zinc, 1-3 pts. wt. amino acid chelated manganese, 1-3 pts. wt. titanium dioxide, 4-8 pts. wt. traditional Chinese medicinal composition, and 2-4 pts. wt. vinegar.    USE - Composite microbial fertilizer used for corn (claimed).    ADVANTAGE - The fertilizer has better absorption and utilization of plant fertilizer and water retention capacity, inhibits growth of weed and pest, minimizes occurrence of soil-borne diseases, and reduces use of pesticide and degradation of pesticide residue in soil. The method saves cost, improves usage efficiency, yield and quality, reduces soil bulk density, and promotes rapid growth of corn root.    DETAILED DESCRIPTION - Composite microbial fertilizer comprises 20-30 pts. wt. microorganism inoculant, 5-10 pts. wt. biological carbon, 20-30 pts. wt. urea, 5-9 pts. wt. diammonium phosphate, 3-8 pts. wt. potassium dihydrogen phosphate, 5-10 pts. wt. potassium chloride, 1-5 pts. wt. boric acid, 1-6 pts. wt. magnesium sulfate, 1-2 pts. wt. ferrous sulfate, 1-2 pts. wt. amino acid chelated zinc, 1-3 pts. wt. amino acid chelated manganese, 1-3 pts. wt. titanium dioxide, 4-8 pts. wt. traditional Chinese medicinal composition, and 2-4 pts. wt. vinegar. The microorganism inoculant is Bacillus megaterium, Bacillus mucilaginosus, Bacillus cereus, and Bacillus subtilis having effective viable count of 20 billion/g. The microorganism inoculant is prepared by mixing raw materials at ratio of 1:1:0.5:0.8, crushing, and maintaining moisture content to less than 30%. The biological carbon is prepared by drying corn straw at 60 degrees C, crushing into 2 cm length, heating to 550 degrees C at 10 degrees C/minute for 1.5 hours under limited oxygen condition, cooling to room temperature, and sieving through 100 meshes sieve. The traditional Chinese medicine is prepared by mixing pepper leaves, Pyrethrum, and Chinaberry bark at weight ratio of 1:1-1.5:1-2. The vinegar is prepared by taking bamboo charcoal, introducing into carbon kiln with gas at 120-130 degrees C, collecting liquid, cooling at room temperature, precipitating, filtering, and distilling. The composite microbial fertilizer is prepared by taking each raw material; grinding and sieving through 100 meshes sieve; and milling, uniformly mixing, granulating, drying, sieving, and packaging.