NOVELTY - Fertilizer is prepared by crushing dried cornstalks into powder, adding powder to fermentation tank, adding soybean meal and water to fermentation tank, fermenting materials to obtain fermentation liquid, mixing e.g. vermiculite powder, zeolite powder and water, feeding stirred product to reaction tank, heating added mixture, cooling product to obtain paste, mixing e.g. the paste, and water, granulating mixture, cutting granules to obtain strip-shaped fertilizer, spraying fermentation liquid on strip-shaped fertilizer, and drying strip-shaped fertilizer.    USE - The fertilizer is useful for improving soil texture, and maintaining nutrient content of soil.    ADVANTAGE - The fertilizer utilizes agricultural waste e.g. organic waste of crops, and has excellent durability.    DETAILED DESCRIPTION - Fertilizer is prepared by (a) drying cornstalks, crushing dried cornstalks into powder with using pulverizer, adding the powder to fermentation tank comprising medium, adding soybean meal and water to the fermentation tank, maintaining temperature of the fermentation tank at 80-90 degrees C, uniformly stirring added materials, reducing the temperature to 30 degrees C, again stirring the materials at a speed of 100-200 revolutions/minute (rpm), and fermenting added materials for 36-40 hours to obtain fermentation liquid, where (i) ratio of cornstalk powder, soybean meal, water and medium is 5:2:20:1, and (ii) fermenting step involves using mixture of Bacillus subtilis, Trichoderma and nitrogen-fixing bacteria in a volume ratio of 1:1:1, (b) mixing vermiculite powder, powdered activated carbon, lignite powder, zeolite powder and water in a mass ratio of 3:2:1:1:10 to tank, stirring mixture at a speed of 300-500 rpm for 30 minutes, feeding stirred product to reaction tank, heating added mixture at 100 degrees C for 5-10 minutes, and cooling product to room temperature to obtain paste, and (c) uniformly mixing the paste, carbamide, monoammonium phosphate, potassium chloride, ammonium chloride and water in a ratio of 1:1:3:2:2:2, adding mixture to a twin screw extruder, granulating extruded mixture in granulator, cutting granules to obtain strip-shaped fertilizer, uniformly spraying the fermentation liquid on the strip-shaped fertilizer, drying the strip-shaped fertilizer at low temperature until moisture content becomes 1-2%, and packing dried product.