NOVELTY - Effective-microorganism fermentation complex fertilizer, comprises 30-34 pts. soybean flour, 40-45 pts. switchgrass, 30-34 pts. cotton stalk, 40-45 pts. sweet potato vine, 20-24 pts. feather meal, 40-45 pts. monosodium glutamate residue, 10-12 pts. zeolite, 23-26 pts. potassium dihydrogen phosphate, 4-5 pts. ferrous sulfate, 2-3 pts. boric acid, 2-3 pts. ammonium molybdate, 2-3 pts. zinc oxide, 3-4 pts. effective-microorganism agent and 4-6 pts. coating agent including hydroxyethyl methacrylate, trimethylolpropane triacrylate, silane coupling agent KH-570, nano-carbon and jade powder.    USE - The complex fertilizer is useful for yielding seedless grapes (claimed).    ADVANTAGE - The complex fertilizer is a comprehensive nutrition fertilizer with trace elements, ensures high yield and high quality of grape without minimal soil damage, and environmentally friendly.    DETAILED DESCRIPTION - Effective-microorganism fermentation complex fertilizer, comprises 30-34 pts. soybean flour, 40-45 pts. switchgrass, 30-34 pts. cotton stalk, 40-45 pts. sweet potato vine, 20-24 pts. feather meal, 40-45 pts. monosodium glutamate residue, 10-12 pts. zeolite, 23-26 pts. potassium dihydrogen phosphate, 4-5 pts. ferrous sulfate, 2-3 pts. boric acid, 2-3 pts. ammonium molybdate, 2-3 pts. zinc oxide, 3-4 pts. effective-microorganism agent and 4-6 pts. coating agent including 30-35 pts. hydroxyethyl methacrylate, 10-15 pts. trimethylolpropane triacrylate, 2-3 pts. silane coupling agent KH-570, 1-2 pts. nano-carbon and 2-3 pts. jade powder. The coating agent is prepared by mixing all raw materials, grinding and dispersing uniformly. An INDEPENDENT CLAIM is also included for preparing complex fertilizer, comprising: (i) cutting switchgrass, cotton stalk and sweet potato vine into 1-2 cm pieces and mixing with soybean flour, feather meal and monosodium glutamate residue, adding effective-microorganism agent and proper amount of water, stirring uniformly, stacking to ferment for 6-8 days by turning once, then turning once for every 2-3 days until the fermentation material completely decomposes; (ii) processing zeolite into powder and mixing with fermented material, adding other components except coating agent, mixing uniformly; and (iii) heating the resultant mixture to 80-90 degrees C, adding coating agent, stirring uniformly and granulating.