NOVELTY - Organic fertilizer comprises straw (25-35 pts. wt.), coal gangue (6-8 pts. wt.), rock phosphate powder (8-10 pts. wt.), Bacillus subtilis (4-5 pts. wt.), urea (12-16 pts. wt.), palygorskite (4-6 pts. wt.), polyacrylamide (2-3 pts. wt.), wood powder (15-20 pts. wt.), plant ash (6-7 pts. wt.), rice straw (12-18 pts. wt.), ammonium bicarbonate (6-8 pts. wt.), duckweed powder (5-9 pts. wt.), Paenibacillus polymyxa (4-5 pts. wt.), moss (6-8 pts. wt.), corn (20-30 pts. wt.), soil conditioner (30-40 pts. wt.), and water.    USE - Organic fertilizer used for Morus nigra in all seasons (claimed).    ADVANTAGE - The organic fertilizer is economic, eco-friendly, and has good applicability and popularization.    DETAILED DESCRIPTION - Organic fertilizer comprises straw (25-35 pts. wt.), coal gangue (6-8 pts. wt.), rock phosphate powder (8-10 pts. wt.), Bacillus subtilis (4-5 pts. wt.), urea (12-16 pts. wt.), palygorskite (4-6 pts. wt.), polyacrylamide (2-3 pts. wt.), wood powder (15-20 pts. wt.), plant ash (6-7 pts. wt.), rice straw (12-18 pts. wt.), ammonium bicarbonate (6-8 pts. wt.), duckweed powder (5-9 pts. wt.), Paenibacillus polymyxa (4-5 pts. wt.), moss (6-8 pts. wt.), corn (20-30 pts. wt.), soil conditioner (30-40 pts. wt.), and water. Soil conditioner comprises mica powder (2-3 pts. wt.), ammonium molybdate (2-4 pts. wt.), polyacrylic acid (3-4 pts. wt.), Bullacta exarata (6-8 pts. wt.), chelated manganese EDTA (5-6 pts. wt.), chelated magnesium EDTA (5-6 pts. wt.), chelated copper EDTA (5-6 pts. wt.), chelated iron EDTA (6-7 pts. wt.), calcium amino acid chelate (6-7 pts. wt.), erbium (20-30 pts. wt.), gypsum (3-4 pts. wt.), fish waste (15-25 pts. wt.), wood-decay fungus (5-8 pts. wt.), ammonium dihydrogen phosphate (5-6 pts. wt.), and sugarcane fiber (6-10 pts. wt.). Soil conditioner is prepared by heating erbium and Bullacta exarata shell powder with water for 40-60 minutes, and then fermenting obtained product with polyacrylic acid, wood-decay fungus and sugarcane fiber for 5-6 days. Obtained product is pulverized with remaining ingredients in pulveizer to obtain fine powder. Obtained fine powder is pelletized to obtain pellets having diameter of 3-5mm. Mica powder is added to obtained pellets. An INDEPENDENT CLAIM is included for a method for preparing organic fertilizer, which involves:    (A) paving straw in compost pool;    (B) spraying water for 5-10 minutes in compost pool;    (C) adding corn, Bacillus subtilis, wood powder, duckweed powder and Paenibacillus polymyxa to compost pool;    (D) fermenting obtained mixture for 15-25 days to obtain fermentation product;    (E) soaking pulverized palygorskite, plant ash, rice straw and moss in water at 50-80 degrees C for 90-120 minutes;    (F) filtering soaked product;    (G) mixing filtered residue with obtained fermentation product;    (H) fermenting obtained mixture for 10-15 days at high temperature under aerobic condition;    (I) adding pulverized coal gangue, powdered rock phosphate, urea, polyacrylamide and ammonium bicarbonate to obtained fermented product;    (J) granulating obtained mixture; and    (K) packing dried granules.