NOVELTY - A slow-release blend fertilizer comprises 70-80 pts. wt. soybean meal, 30-34 pts. wt. corncob, 6-9 pts. wt. bamboo shell, 13-16 pts. wt. sugar cane bagasse, 4-5 pts. wt. corn meal, 2-3 pts. wt. lime, 23-25 pts. wt. slow-release urea, 12-15 pts. wt. potassium hydroxide, 2-3 pts. wt. magnesium sulfate, 1-2 pts. wt. zinc sulfate, 1-2 pts. wt. sodium selenite, 1-2 pts. wt. manganese sulfate, 2-3 pts. wt. borax, 1-2 pts. wt. polyvinyl alcohol, 3-4 pts. wt. Effective Microorganisms microbial inoculum, 4-6 pts. wt. coating agent, and balance water.    USE - Slow-release blend fertilizer.    ADVANTAGE - The fertilizer is rich in organic matter, provides crop growth and development, improves yield and mass of plant, improves soil property, and has long fertilizer efficiency.    DETAILED DESCRIPTION - A slow-release blend fertilizer comprises 70-80 pts. wt. soybean meal, 30-34 pts. wt. corncob, 6-9 pts. wt. bamboo shell, 13-16 pts. wt. sugar cane bagasse, 4-5 pts. wt. corn meal, 2-3 pts. wt. lime, 23-25 pts. wt. slow-release urea, 12-15 pts. wt. potassium hydroxide, 2-3 pts. wt. magnesium sulfate, 1-2 pts. wt. zinc sulfate, 1-2 pts. wt. sodium selenite, 1-2 pts. wt. manganese sulfate, 2-3 pts. wt. borax, 1-2 pts. wt. polyvinyl alcohol, 3-4 pts. wt. Effective Microorganisms microbial inoculum, 4-6 pts. wt. coating agent, and balance water. Coating agent comprises 10-12 pts. wt. dipentaerythritol hexaacrylate, 2-3 pts. wt. silane coupling agent KH-570, 0.1-0.2 pt. wt. nanocarbon, and 1-2 pts. wt. medical stone powder. An INDEPENDENT CLAIM is included for preparation of slow-release blend fertilizer comprising taking soybean meal, corncob, bamboo shell and sugar cane bagasse, crushing, mixing, adding corn meal and water, stirring uniformly, adding Effective Microorganisms microbial inoculum, placing for 1-2 days, sealing to ferment for 20-30 days, turning over for 5-6 times, adding slow-release urea, potassium hydroxide and lime to react for 5-10 minutes, adding remaining raw materials, stirring to completely dissolve, fermenting for 5-8 days, turning over for 2-3 times, stirring uniformly, drying, and granulating.