NOVELTY - Preparation of peanut organic slow-release fertilizer includes calcining iron ore, dolomite, potassium feldspar and slag powder, crushing, mixing with waste corncob charcoal, animal manure and water, cooling, and adding bacteria to obtain first mixture; mixing sepiolite, ferrous sulfate, citric acid, manganese sulfate, sodium silicate, ammonium molybdate, urea phosphate and borax in mixer to obtain second mixture; dissolving second mixture in water to obtain mixed solution, adding first mixture, mixing with rapeseed, fermenting, adding bacteria, and fermenting.    USE - Method for preparation of peanut organic slow-release fertilizer (claimed).    ADVANTAGE - The fertilizer satisfies peanut nutrient requirement for growing period, and it has easy to obtain raw material, low cost, high utilization rate of nitrogen, phosphorus and potassium element, and good slow release ability.    DETAILED DESCRIPTION - Preparation of peanut organic slow-release fertilizer comprises:    (A) calcining 1-2 pts. wt. iron ore, 0.5-1 pt. wt. dolomite, 1.2-1.5 pts. wt. potassium feldspar and 0.7-1.3 pts. wt. slag powder to 400-500 degrees C for 5-7 hours, crushing into 50-60 mesh powder, mixing with 10-13 pts. wt. waste corncob charcoal, 20-40 pts. wt. animal manure and 15-20 pts. wt. water at 85-95 degrees C, cooling to 25-36 degrees C, and adding bacteria to obtain first mixture;    (B) mixing 1-2 pts. wt. sepiolite, 1.5-3 pts. wt. ferrous sulfate, 2-4 pts. wt. citric acid, 1-2 pts. wt. manganese sulfate, 1.2-1.7 pts. wt. sodium silicate, 0.25-0.5 pts. wt. ammonium molybdate, 1-2 pts. wt. urea phosphate and 1-3 pts. wt. borax in mixer at 65-75 degrees C to obtain second mixture;    (C) dissolving 18-23 wt.% second mixture in water to obtain 0.5-0.75 wt.% mixed solution, adding first mixture, mixing with 80-120 wt.% rapeseed, fermenting to 30-35 degrees C for 1-2 days, adding bacteria, and continuously fermenting for 2-4 days to obtain third mixture;    (D) adding burned honeycomb, air-drying to room temperature under dark environment condition for 7-8 days, and crushing to obtain dry mixture; and    (E) adding 6-8 pts. wt. dicyandiamide powder, 1-4 pts. wt. polyvinyl alcohol, 18-20 pts. wt. urea, 1.5-3 pts. wt. slow-release agent and remaining second mixture, mixing, crushing, and sieving.