NOVELTY - Tree composite coated base fertilizer comprises 45-53 pts. wt. sunflower seed, 24-30 pts. wt. rape seed, 30-35 pts. wt. bran, 1-2 pts. wt. zinc chloride, 1-1.5 pts. wt. borax, 2-3 pts. wt. ferrous sulfate, 2-3 pts. wt. copper sulfate, 3-5 pts. wt. magnesia fine particles, 45-56 pts. wt. straw powder, 15-20 pts. wt. starch, 5-7 pts. wt. Effective Microorganisms liquid, 10-13 pts. wt. zeolite powder, 3-5 pts. wt. amino acid, 9-11 pts. wt. chitin, 8-10 pts. wt. soil improving agent, and balance water. The soil improving agent includes 10-20 pts. wt. clay and 1-2 pts. wt. carbon nanopowder.    USE - Tree composite coated base fertilizer.    ADVANTAGE - The fertilizer promotes plant nutrient absorption and has function of slow release or controlled release to reduce fertilizer waste and save cost.    DETAILED DESCRIPTION - Tree composite coated base fertilizer comprises 45-53 pts. wt. sunflower seed, 24-30 pts. wt. rape seed, 30-35 pts. wt. bran, 1-2 pts. wt. zinc chloride, 1-1.5 pts. wt. borax, 2-3 pts. wt. ferrous sulfate, 2-3 pts. wt. copper sulfate, 3-5 pts. wt. magnesia fine particles, 45-56 pts. wt. straw powder, 15-20 pts. wt. starch, 5-7 pts. wt. Effective Microorganisms liquid, 10-13 pts. wt. zeolite powder, 3-5 pts. wt. amino acid, 9-11 pts. wt. chitin, 8-10 pts. wt. soil improving agent, and balance water. The soil improving agent comprises 10-20 pts. wt. clay, 1-2 pts. wt. carbon nanopowder, 4-5 pts. wt. sodium metasilicate, 17-19 pts. wt. methyl methacrylate, 3-4 pts. wt. selenium yeast, 2-3 pts. wt. copper sulfate, 2-3 pts. wt. zinc gluconate, 1-2 pts. wt. magnesium chloride, 2-3 pts. wt. ammonium citrate, 1-2 pts. wt. boric acid, 4-6 pts. wt. dipentaerythritol hexaacrylate, 35-40 pts. wt. vinegar, 2-3 pts. wt. chitosan, 1-2 pts. wt. Eucalyptus oil, 3-4 pts. wt. hydroxypropyl methacrylate, 3-4 pts. wt. diatomite, and 2-3 pts. wt. methyl triethoxysilane. An INDEPENDENT CLAIM is included for preparation of composite coated base fertilizer, comprising:    (A) mixing zinc chloride, borax, ferrous sulfate, copper sulfate, magnesia fine particles, and zeolite powder, adding water and soil modifying agent, uniformly mixing, then adding amino acid and chitin, continuously stirring to obtain slurry, and drying to obtain particles A;    (B) adding rest components except starch, uniformly mixing, controlling water content to 44-51%, uniformly stirring, sealing and fermenting in anaerobic condition for 21-28 days, turning stack every 4-5 days, then drying the fermented material, and crushing to obtain particles B; and    (C) mixing particles A and particles B, adding to a fluidized bed, introducing air at 75-100 degrees C, holding air pressure in a suspended state, adding starch with 3-4 times water to obtain starch paste, heating to 45-50 degrees C, and then spraying the starch paste onto the mixed particles, then cooling and sieving to obtain the fertilizer product.