NOVELTY - Bioorganic compound fertilizer comprises 5-8 pts. wt. calcium superphosphate, 16-21 pts. wt. potassium sulfate, 3-5 pts. wt. magnesium sulfate, 1-2 pts. wt. zinc sulfate, 5-8 pts. wt. potassium fulvate, 26-33 pts. wt. soybean cake, 31-35 pts. wt. peanut cake, 30-35 pts. wt. powdered rock phosphate, 14-17 pts. wt. triglycol dioctate, 76-80 pts. wt. rice bran, 80-90 pts. wt. wheat bran, 23-30 pts. wt. gelatin waste, 16-24 pts. wt. ammonium chloride, 6-8 pts. wt. effective microorganisms (EM), 8-10 pts. wt. soil improving agent, and water, as raw materials.    USE - The bioorganic compound fertilizer is useful as crop fertilizer (claimed).    ADVANTAGE - The fertilizer exhibits slow-release property, rapidly and cost-effectively improves soil fertility and survival rate of crops, enhances water retentivity in soil, has balanced nutrition, and maintains ecological property of soil.    DETAILED DESCRIPTION - Bioorganic compound fertilizer comprises 5-8 pts. wt. calcium superphosphate, 16-21 pts. wt. potassium sulfate, 3-5 pts. wt. magnesium sulfate, 1-2 pts. wt. zinc sulfate, 5-8 pts. wt. potassium fulvate, 26-33 pts. wt. soybean cake, 31-35 pts. wt. peanut cake, 30-35 pts. wt. powdered rock phosphate, 14-17 pts. wt. triglycol dioctate, 76-80 pts. wt. rice bran, 80-90 pts. wt. wheat bran, 23-30 pts. wt. gelatin waste, 16-24 pts. wt. ammonium chloride, 6-8 pts. wt. effective microorganisms (EM), 8-10 pts. wt. soil improving agent, and proper amount of water, as raw materials. The soil modifying agent comprises 10-20 pts. wt. bamboo charcoal, 1-2 pts. wt. nanocarbon powder, 4-5 pts. wt. sodium metasilicate, 17-19 pts. wt. methyl methacrylate, 3-4 pts. wt. selenium yeast, 2-3 pts. wt. copper sulfate, 2-3 pts. wt. zinc gluconate, 1-2 pts. wt. magnesium chloride, 2-3 pts. wt. ammonium citrate, 1-2 pts. wt. boric acid, 4-6 pts. wt. dipentaerythritol hexaacrylate, 30-40 pts. wt. vinegar, 2-3 pts. wt. chitosan, 1-2 pts. wt. Eucalyptus oil, 2-3 pts. wt. citric acid, 1-2 pts. wt. nano-titanium dioxide, 2-3 pts. wt. ammonium sulfate, and 1-2 pts. wt. methyl triethoxysilane. The soil modifying agent is prepared by uniformly mixing the methyl methacrylate, dipentaerythritol hexaacrylate and bamboo charcoal with nanocarbon powder, Eucalyptus oil, nano-titanium dioxide, ammonium sulfate and methyl triethoxysilane, uniformly stirring obtained mixture, mixing the mixture with remaining components, preparing and stirring vinegar solution, then stirring obtained mixture with vinegar solution, and subjecting obtained slurry to high-speed dispersion. An INDEPENDENT CLAIM is included for method for preparing the bioorganic compound fertilizer, which involves (a) mixing the calcium superphosphate, potassium sulfate, magnesium sulfate, zinc sulfate, potassium fulvate, powdered rock phosphate and ammonium chloride, adding suitable amount of warm water to obtained mixture, uniformly mixing the mixture with soil modifying agent, uniformly and continuously stirring the mixture to obtain slurry, concentrating the slurry, and drying concentrate to obtain granule, (b) adding remaining raw materials except triglycol dioctate, uniformly mixing and maintaining water content of mixture at 40-45%, uniformly stirring the mixture, sealing the mixture, subjecting the mixture to anaerobic fermentation at room temperature for 20-30 days, turning the mixture once/3-4 days during fermentation, drying fermented product, and crushing dried product to obtain granule, and (c) uniformly mixing the triglycol dioctate with products obtained in steps (a) and (b), and uniformly processing obtained product at room temperature.