NOVELTY - Preparation of organic corn fertilizer includes mixing (S1) uniformly rice bran and guano with water; taking dregs (S2) into the fermentation tank, adding effective microorganism raw liquid bacteria, mixing, sealing and fermenting to obtain fermented material; adding the first fermentation feedstock (S3); adding (S4) the second fermented material; and taking (S5) nano-diatomite, pearl, sea bird manure, potassium sulfate, and zinc, crushing, mixing uniformly, adding inner layer coated fertilizer, and gelatin aqueous solution, granulating, and drying to obtain organic corn fertilizer.    USE - Method for preparing organic corn fertilizer (claimed).    ADVANTAGE - The method improves soil quality, and increases maize production.    DETAILED DESCRIPTION - Preparation of organic corn fertilizer comprises:    (A) mixing (S1) uniformly 20-50 pts. wt. rice bran and 50-80 pts. wt. guano with water to a water content of 25-35 wt.% to obtain the mixture;    (B) taking (S2) 30-60 pts. wt. dregs (S2) into the fermentation tank, adding effective microorganism (EM) raw liquid bacteria, where volume weight ratio ml:g to EM fungus raw liquid to dregs is 1:60-75, mixing, sealing and fermenting for 3-4 days, each separate 5-10 hours lifting turn one time, to obtain fermented material, the effective amount of EM fungus strain material liquid is 1.2-1.8x 109 colony forming unit (cfu)/ml;    (C) adding the first fermentation feedstock (S3) to ferment at room temperature for 5-8 days, sealing and fermenting at room temperature for 5-8 days after raising to 40-45 degrees C, turning once, continuous fermentation after 40-80 hours, rising temperature to 65-69 degrees C, and continuous fermentation for 50-80 hours to obtain the second fermented material;    (D) adding (S4) the second fermented material with 15-36 pts. wt. lees, 30-50 pts. wt. humic acid, 0.2-0.45 pts. wt. 5-nitro-guaiacol sodium phenol, 12-25 pts. wt. traditional Chinese medicine extract, mixing uniformly, closed fermenting for 2-6 days at 45-50 degrees C, drying, crushing, and granulating to obtain the third fermented material, adding 20-30 pts. wt. urea, 1-3 pts. wt. EDTA chelated iron, 10-16 pts. wt. gypsum, 2-5 pts. wt. sodium silicate, 2-6 pts. wt. polyvinylalcohol aqueous solution having a concentration of 10-14 wt.%, mixing uniformly and drying to obtain inner layer coated fertilizer; and    (E) taking (S5) 10-15 pts. wt. nano-diatomite, 5-12 pts. wt. pearl, 15-24 pts. wt. sea bird manure, 5-15 pts. wt. potassium sulfate, and 2-8 pts. wt. zinc, crushing, mixing uniformly, adding inner layer coated fertilizer, and 2-7 pts. wt. gelatin aqueous solution having a concentration of 2-4 wt.%, granulating, and drying to obtain organic corn fertilizer.    DESCRIPTION OF DRAWING(S) - The drawing is a schematic diagram of the method for preparing organic corn fertilizer (Drawing includes non-English language text).    Mixing step (S1)    Dregs taking step (S2)    Fermentation feedstock adding step (S3)    Second fermented material adding step (S4)    Nano-diatomite taking step (S5)