NOVELTY - Fertilizer comprises 15-20 pts. wt. wheat bran, 5-10 pts. wt. stone powder, 50-70 pts. wt. peanut cake, 35-40 pts. wt. wood, 30-36 pts. wt. cotton straw, 20-25 pts. wt. humus, 10-15 pts. wt. traditional Chinese medicine residue, 8-14 pts. wt. shrimp, 2-3 pts. wt. microbial liquid, 5-7 pts. wt. ferrous sulfate, 6-10 pts. wt. potassium oxide, 3-5 pts. wt. sodium alginate, 12-16 pts. wt. ammonium chloride, 10-15 pts. wt. potassium dihydrogen phosphate, 15-20 pts. wt. charcoal powder, 4-8 pts. wt. granite powder, 3-4 pts. wt. coating agent and balanced amount of water.    USE - Fertilizer used for planting sweet potato (claimed).    ADVANTAGE - The fertilizer prevents soil plate structure and increases sweet potato yield and economic benefit.    DETAILED DESCRIPTION - Fertilizer comprises 15-20 pts. wt. wheat bran, 5-10 pts. wt. stone powder, 50-70 pts. wt. peanut cake, 35-40 pts. wt. wood, 30-36 pts. wt. cotton straw, 20-25 pts. wt. humus, 10-15 pts. wt. traditional Chinese medicine residue, 8-14 pts. wt. shrimp, 2-3 pts. wt. microbial liquid, 5-7 pts. wt. ferrous sulfate, 6-10 pts. wt. potassium oxide, 3-5 pts. wt. sodium alginate, 12-16 pts. wt. ammonium chloride, 10-15 pts. wt. potassium dihydrogen phosphate, 15-20 pts. wt. charcoal powder, 4-8 pts. wt. granite powder, 3-4 pts. wt. coating agent and balanced amount of water. The coating agent comprises 1-2 pts. wt. divinyl benzene, 4-6 pts. wt. calcium oxide, 3-5 pts. wt. melamine formaldehyde resin, 6-9 pts. wt. isopropyl alcohol, 3-5 pts. wt. bamboo carbon powder, 2-4 pts. wt. acetic acid, 1-2 pts. wt. glycerin, 8-10 pts. wt. limestone powder, 0.5-1 pts. wt. sulfuric acid and balanced amount of water. An INDEPENDENT CLAIM is included for a method for preparing fertilizer, which involves:    (A) crushing and mixing wheat bran, peanut cake, wood, cotton straw, traditional Chinese medicine residue and shrimp shell;    (B) fermenting obtained mixture with microbial liquid and water for 18-21 days;    (C) mixing fermented mixture with stone powder, granite powder and water to obtain homogenate that is mixed with humus to obtain paste;    (D) mixing ferrous sulfate, potassium oxide, sodium alginate, ammonium chloride, monopotassium phosphate and remaining components with water and obtained paste;    (E) heating obtained mixture for 30-40 minutes;    (F) granulating and drying heated mixture in a machine;    (G) film-coating obtained granules at 60-85 degrees C; and    (H) air-drying coated granule for 10-15 minutes to obtain product.