NOVELTY - Potassium-rich organic slow-release fertilizer comprises 20-30 pts. wt. bean cake powder, 5-6 pts. wt. potassium sulfate, 3-4 pts. wt. perlite, 40-60 pts. wt. dairy manure, 6-8 pts. wt. potassium mineral powder, 3-5 pts. wt. flour, 3-4 pts. wt. calcium chloride, 4-5 pts. wt. animal fat, 2-3 pts. wt. zinc sulfate, 4-7 pts. wt. bean straw, 4-5 pts. wt. palm oil, 6-8 pts. wt. ammonium phosphate, 3-5 pts. wt. egg shell, 15-20 pts. wt. soybean residue, 4-5 pts. wt. effective microorganism and 30-40 pts. wt. soil conditioning agent.    USE - Potassium-rich organic slow-release fertilizer used for muskmelon (claimed).    ADVANTAGE - The potassium-rich organic slow-release fertilizer improves granule structure of soil, enhances physical performance of soil, reduces loss of soil granules, increases soil fertility and long-term health growth of plant, and enhances fruit yield of muskmelon.    DETAILED DESCRIPTION - Potassium-rich organic slow-release fertilizer comprises 20-30 pts. wt. bean cake powder, 5-6 pts. wt. potassium sulfate, 3-4 pts. wt. perlite, 40-60 pts. wt. dairy manure, 6-8 pts. wt. potassium mineral powder, 3-5 pts. wt. flour, 3-4 pts. wt. calcium chloride, 4-5 pts. wt. animal fat, 2-3 pts. wt. zinc sulfate, 4-7 pts. wt. bean straw, 4-5 pts. wt. palm oil, 6-8 pts. wt. ammonium phosphate, 3-5 pts. wt. egg shell, 15-20 pts. wt. soybean residue, 4-5 pts. wt. effective microorganism and 30-40 pts. wt. soil conditioning agent. Soil conditioning agent comprises 2-3 pts. wt. mica powder, 2-4 pts. wt. ammonium molybdate, 3-4 pts. wt. polyacrylic acid, 6-8 pts. wt. Bullacta exarata shell powder, 5-6 pts. wt. EDTA chelated manganese, 5-6 pts. wt. EDTA chelated magnesium, 5-6 pts. wt. EDTA chelated copper, 6-7 pts. wt. amino acid chelated iron, 6-7 pts. wt. amino acid chelated calcium, 20-30 pts. wt. erbium, 3-4 pts. wt. gypsum, 15-25 pts. wt. waste water product, 5-8 pts. wt. wood-decay fungi residue, 5-6 pts. wt. ammonium dihydrogen phosphate and 6-10 pts. wt. sugar cane fiber. Soil conditioning agent is prepared by drying seabird excrement under sunlight and then mixed crushed gypsum. Bullacta exarata shell powder is obtained by mixing water and heating for 40-60 minutes and cooled. The product is put into a fermentation pool and polyacrylic acid, wood-decay fungi residue and sugar cane fiber are mixed to carry out composting fermentation for 5-6 days to obtain fermentation product. Remaining components are crushed and mixed with fermentation product, and crushed and sprayed wet mica powder uniformly to obtain pellets. The pellets are dried and cooled. An INDEPENDENT CLAIM is included for a method for preparing potassium-rich organic slow-release fertilizer, which involves:    (A) crushing potassium sulfate, perlite, calcium chloride potassium, potassium mineral powder, zinc sulfate and ammonium phosphate in a crushing machine and grinding into fine powder;    (B) mixing remaining components with fine powder to carry out fermentation for 15-25 days to obtain fermented product; and    (C) processing the fermented product in a pelletizer and spraying soil conditioning agent on surface, and then drying.