NOVELTY - An orange tree planting slow-release fertilizer comprises soy sauce residue, bamboo coal powder, perlite, cotton seed hulls, gelatin powder, corn powder, rice hull, red soil, chicken manure, effective microorganism biological bacteria agent, magnesium hydroxide, ammonium sulfate, potassium phosphate, potassium chloride, sodium bisulfite, zinc chloride, calcium superphosphate, starch, urea-formaldehyde resin, isopropanol, alpha -olefin sulfonate, auxiliary agent, and water.    USE - Orange tree planting slow-release fertilizer.    ADVANTAGE - The slow-release fertilizer effectively reduces fertilizer waste and long-term human force.    DETAILED DESCRIPTION - An orange tree planting slow-release fertilizer comprises 7-9 pts. wt. soy sauce residue, 3-4 pts. wt. bamboo coal powder, 8-11 pts. wt. perlite, 8-10 pts. wt. cotton seed hulls, 4-5 pts. wt. gelatin powder, 7-9 pts. wt. corn powder, 10-14 pts. wt. rice hull, 12-15 pts. wt. red soil, 12-14 pts. wt. chicken manure, 2-3 pts. wt. effective microorganism biological bacteria agent, 3-4 pts. wt. magnesium hydroxide, 8-9 pts. wt. ammonium sulfate, 5-7 pts. wt. potassium phosphate, 6-8 pts. wt. potassium chloride, 4-5 pts. wt. sodium bisulfite, 7-10 pts. wt. zinc chloride, 2-4 pts. wt. calcium superphosphate, 1-2 pts. wt. starch, 6-7 pts. wt. urea-formaldehyde resin, 2-3 pts. wt. isopropanol, 2-3 pts. wt. alpha -olefin sulfonate, 5-6 pts. wt. auxiliary agent, and balance water. The auxiliary agent comprises 6-7 pts. wt. agar, 3-4 pts. wt. ethylene glycol dimethacrylate, 1-2 pts. wt. bamboo coal powder, 7-9 pts. wt. borax, 5-6 pts. wt. zinc borate, 3-5 pts. wt. glycerol, 1-2 pts. wt. zinc sulfate, 2-3 pts. wt. ammonium molybdate, 10-14 pts. wt. starch, and balance water. The auxiliary agent is prepared by mixing agar and starch, adding 50 pts. wt. water, heating while stirring to dissolve, adding remaining components, continuously heating while stirring for 70-80 minutes, and cooling to room temperature. An INDEPENDENT CLAIM is included for preparation of slow-release fertilizer comprising crushing soy sauce residue, bamboo coal powder, cotton seed hulls, gelatin powder, corn powder, rice hull, red soil and chicken manure into ultrafine dry powder, adding effective microorganism biological bacteria agent, diluting with 10 times water, adjusting water content to 35%, and fermenting to 37-42 degrees C for 20-24 days while turning once every 2 days; mixing magnesium hydroxide, ammonium sulfate, potassium phosphate, potassium chloride, sodium bisulfite, zinc chloride and calcium superphosphate, adding 5-6 times water, heating while stirring to dissolve, adding starch, urea-formaldehyde resin, isopropanol and alpha -olefin sulfonate, and stirring for 15-20 minutes to obtain mixture; crushing perlite into 60 mesh powder, adding into mixture, and heating while stirring constantly for 40-50 minutes to obtain gummy mixture; and mixing with fermented material, adding auxiliary agent, mechanically stirring for 30-40 minutes, and granulating.