NOVELTY - A special slow-release compound fertilizer comprises quicklime, ferrous sulfate, potassium dihydrogen phosphate, chlorothalonil, cabbage slag, licorice, effective microorganisms original liquid, urea, wheat bran, waste clay, zinc sulfate, borax, ammonium citrate, terpineol, tributyl citrate, Span 80 (RTM: sorbitan monooleate), sodium polypropylene, 500-meshes zeolite powder, and additive.    USE - Special slow-release compound fertilizer used for resisting drought (claimed) and improving soil.    ADVANTAGE - The fertilizer has high efficiency, absorbing property, water-retaining effect, lasting fertilizer effect, and high yield of crops and is rich in active components and simple.    DETAILED DESCRIPTION - A special slow-release compound fertilizer comprises 10-12 pts. wt. quicklime, 4-5 pts. wt. ferrous sulfate, 30-35 pts. wt. potassium dihydrogen phosphate, 0.01-0.02 pt. wt. chlorothalonil, 12-13 pts. wt. cabbage slag, 3-5 pts. wt. licorice, 0.3-0.5 pt. wt. effective microorganisms original liquid, 35-38 pts. wt. urea, 10-12 pts. wt. wheat bran, 8-10 pts. wt. waste clay, 3-5 pts. wt. zinc sulfate, 5-6 pts. wt. borax, 0.1-0.2 pt. wt. ammonium citrate, 1-3 pts. wt. terpineol, 1-2 pts. wt. tributyl citrate, 1-2 pts. wt. Span 80 (RTM: sorbitan monooleate), 8-10 pts. wt. sodium polypropylene, 0.2-0.3 pt. wt. 500-meshes zeolite powder, and 3-5 pts. wt. additive. The additive comprises 1-3 pts. wt. cinnamon oil, 1-2 pts. wt. sodium dodecyl benzene sulfonate, 2-3 pts. wt. manganese sulfate, 4-5 pts. wt. casein phosphopeptide, 0.01-0.02 pt. wt. nano carbon, 6-8 pts. wt. sodium carboxymethyl starch, 2-3 pts. wt. sodium bicarbonate, and 1-2 pts. wt. alpha -lipoic acid. The additive is prepared by mixing sodium dodecyl benzene sulfonate with 10 times water, heating at 55-65 degrees C, stirring, adding cinnamon oil, manganese sulfate, casein phosphopeptide, and nano carbon, stirring for 40-50 minutes, adding residual materials, continuously stirring for 1-2 hours, and naturally cooling to room temperature. An INDEPENDENT CLAIM is included for the preparation of fertilizer comprising (A) mixing wheat bran and waste clay, crushing, sieving, carbonizing at 400-500 degrees C for 1-2 hours, soaking in 8-10% diluted hydrochloric acid, activating for 3-4 hours, filtering, washing until neutral, and drying; (B) mixing with cabbage residue, crushing, adding water at mass ratio of 1:0.4, adding effective microorganisms original liquid, stirring, hydrolyzing, fermenting at normal temperature for 15-20 days, filtering, adding zinc sulfate, borax, ammonium citrate, and additive, and stirring for 1-2 hours; (C) mixing sodium polyacrylate and water, heating to 40-50 degrees C, stirring, adding terpineol, tributyl citrate, Span 80 (RTM: sorbitan monooleate), and zeolite powder, and stirring for 1-1.5 hours; and (D) mixing product in second step with residual materials, granulating at 50-60 degrees C, spraying product in third step, natural cooling, and drying.