NOVELTY - Fertilizer comprises 55-59 pts. wt. tea seed oil, 40-44 pts. wt. peanut bran, 39-43 pts. wt. Paulownia fortunei wood, 40-45 pts. wt. straw powder, 50-55 pts. wt. chicken manure, 9-11 pts. wt. kaolin, 3-5 pts. wt. humic acid, 2-4 pts. wt. fern root powder, 7-9 pts. wt. effective microbial agent, 8-9 pts. wt. potassium fulvate, 1-2 pts. wt. ferric sulfate, 20-24 pts. wt. activated sludge, 10-14 pts. wt. calcium superphosphate, 25-29 pts. wt. urea, 6-8 pts. wt. soil conditioning agent, and water (suitable amount).    USE - As fertilizer, preferably slow-release fertilizer.    ADVANTAGE - The fertilizer is cost-effective and environmentally-friendly, improves soil quality, promotes ability of plants to absorb nutrients, and increases crop yield.    DETAILED DESCRIPTION - Fertilizer comprises 55-59 pts. wt. tea seed oil, 40-44 pts. wt. peanut bran, 39-43 pts. wt. Paulownia fortunei wood, 40-45 pts. wt. straw powder, 50-55 pts. wt. chicken manure, 9-11 pts. wt. kaolin, 3-5 pts. wt. humic acid, 2-4 pts. wt. fern root powder, 7-9 pts. wt. effective microbial agent, 8-9 pts. wt. potassium fulvate, 1-2 pts. wt. ferric sulfate, 20-24 pts. wt. activated sludge, 10-14 pts. wt. calcium superphosphate, 25-29 pts. wt. urea, 6-8 pts. wt. soil conditioning agent, and water (suitable amount). The soil conditioning agent comprises 10-20 pts. wt. feather meal, 1-2 pts. wt. nano carbon 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 sulfate, 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, 1-2 pts. wt. zinc oxide, 3-4 pts. wt. wollastonite powder, 10-12 pts. wt. seaweed, and 3-5 pts. wt. chlorinated paraffin. The soil conditioning agent is obtained by mixing methyl methacrylate, dipentaerythritol hexaacrylate, chlorinated paraffin, feather meal, nano carbon powder, Eucalyptus oil, zinc oxide, wollastonite powder and seaweed powder, heating the mixture at 65-75 degrees C, mixing the remaining raw materials with the heated mixture and vinegar, and dispersing the obtained product at high speed. An INDEPENDENT CLAIM is included for method for preparing the above-mentioned fertilizer, which involves (a) mixing the above-mentioned potassium fulvate, ferric sulfate, activated sludge, calcium superphosphate and water, adding the above-mentioned soil conditioning agent, humic acid and kaolin to the mixture, dispersing the mixture at high speed to obtain slurry, drying the obtained product, and granulating the dried product, (b) mixing the remaining raw materials except urea, maintaining water content of the mixture to 45-48%, stirring the mixture, sealing the mixture, fermenting the mixture for 21-258 days (in presence of less amount of oxygen), turning the fermented product once for every 4-5 days and drying the fermented product, and (c) melting the urea, adding the melted urea to the products obtained in steps (a) and (b), cooling the obtained product to room temperature, and drying the product.