NOVELTY - Fertilizer contains 32-35 pts. wt. chicken manure, 34-37 pts. wt. pig manure, 17-24 pts. wt. dipotassium hydrogen phosphate, 12-15 pts. wt. potassium acetate, 1-2 pts. wt. borax, 3-5 pts. wt. polyglutamate, 1-3 pts. wt. succinic acid, 2-4 pts. wt. gypsum, 3-6 pts. wt. phosphonium, 13-15 pts. wt. ammonium sulfate, 22-24 pts. wt. lake mud, 0.1-0.4 pts. wt. urease inhibitor, 24-26 pts. wt. biogas slurry, 30-34 pts. wt. straw, 20-24 pts. wt. plant ash, 8-13 pts. wt. sulfur, 6-9 pts. wt. effective microorganism, 6-9 pts. wt. soil modifying agent and remained water.    USE - The fertilizer is useful for promoting growth in strawberry plant (claimed).    ADVANTAGE - The fertilizer increases utilization rate of nitrogen and absorption of nutrients, and enables to reduce usage of chemical fertilizer.    DETAILED DESCRIPTION - Fertilizer comprises 32-35 pts. wt. chicken manure, 34-37 pts. wt. pig manure, 17-24 pts. wt. dipotassium hydrogen phosphate, 12-15 pts. wt. potassium acetate, 1-2 pts. wt. borax, 3-5 pts. wt. polyglutamate, 1-3 pts. wt. succinic acid, 0.1-0.3 pt. wt. Azotobacter, 0.1-0.3 pt. wt. Rhizobium, 1-2 pts. wt. sodium fluoroborate, 2-4 pts. wt. gypsum, 3-6 pts. wt. phosphonium, 13-15 pts. wt. ammonium sulfate, 22-24 pts. wt. lake mud, 0.1-0.4 pts. wt. urease inhibitor, 24-26 pts. wt. biogas slurry, 30-34 pts. wt. straw, 20-24 pts. wt. plant ash, 8-13 pts. wt. sulfur, 6-9 pts. wt. effective microorganism, 6-9 pts. wt. soil modifying agent, and remained water. The soil modifying agent comprises 0.4-1 pt. wt. manganese sulfate, 0.3-1 pt. wt. nanocarbon, 1-2 pts. wt. ammonium sulfate, 0.5-1 pt. wt. enriched yeast, 1-2 pts. wt. calcium citrate, 0.3-1 pt. wt. zinc gluconate, 0.2-0.6 pt. wt. castor oil, 13-15 pts. wt. tetraethyl orthosilicate, 0.3-0.8 pt. wt. citric acid, 8-10 pts. wt. bentonite, 2-4 pts. wt. ethyl cellulose, 1-2 pts. wt. magnesium sulfate, and 0.2-0.6 pt. wt. bamboo fiber. The soil modifying agent is prepared by weighing the above-mentioned raw materials, mixing ammonium sulfate, enriched yeast, calcium citrate, zinc gluconate, magnesium sulfate, and tetraethyl orthosilicate, heating mixture at 40-50 degrees C, adding manganese sulfate, nanocarbon, citric acid, bentonite and bamboo fiber, stirring mixture, concentrating solution, granulating, drying granules, adding 10 times of ethyl cellulose to coating pan, adding castor oil, mixing uniformly, spraying mixture on granules, drying granules to remove ethanol, sieving granules and drying at room temperature. An INDEPENDENT CLAIM is included for method for preparing the fertilizer, which involves (a) mixing chicken manure, pig manure, lake mud, biogas slurry, straw, plant ash, and effective microorganism, maintaining moisture content to 41-45%, stirring uniformly, sealing container, performing anaerobic fermentation at room temperature for 22-27 days, turning the mixture 3-4 times once every day, drying fermented mixture and sieving dried mixture using 200-400 mesh sieve, (b) mixing soil modifying agent, sulfur and other remaining raw materials to obtain mixture, mixing mixture with material obtained in step (a), and granulating mixture to obtain granules, and (c) adding granules obtained in step (b) into drum granulator, spraying sulfur on granules, until material is coated uniformly on granules and cooling granules at room temperature.