NOVELTY - Mixed fertilizer comprises urea, red jade soil, Cymatium pileare shell powder, dried sheep manure, soybean straw powder, dried chicken manure, monoammonium phosphate, potassium sulfate, fruit residue, fig leaf powder, ammonium bicarbonate, oat hulls, Trichoderma, boric acid, celestite powder, soil conditioner and suitable quantity of washed rice water. The soil conditioner contains mica powder, ammonium molybdate, sodium polyacrylate, Bullacta exarata shell powder, EDTA chelated manganese, EDTA chelated magnesium and EDTA chelated copper.    USE - Mixed fertilizer is useful for Morus nigra (claimed).    ADVANTAGE - The mixed fertilizer is a sustained-release fertilizer which is prepared by mixing organic and inorganic composition and cost-effective, reduces the use of chemical fertilizers, enhances compost quality and M.nigra yield and shortens ripening period of M.nigra during 4 seasons.    DETAILED DESCRIPTION - Mixed fertilizer comprises 6-8 pts. wt. urea, 10-16 pts. wt. red jade soil, 2-3 pts. wt. Cymatium pileare shell powder, 20-30 pts. wt. dried sheep manure, 12-15 pts. wt. soybean straw powder, 45-55 pts. wt. dried chicken manure, 5-6 pts. wt. monoammonium phosphate, 3-5 pts. wt. potassium sulfate, 4-6 pts. wt. fruit residue, 4-6 pts. wt. fig leaf powder, 4-5 pts. wt. ammonium bicarbonate, 6-7 pts. wt. oat hulls, 3-4 pts. wt. Trichoderma, 3-4 pts. wt. boric acid, 6-8 pts. wt. celestite powder, 30-40 pts. wt. soil conditioner and suitable quantity of washed rice water. The soil conditioner comprises 2-3 pts. wt. mica powder, 2-4 pts. wt. ammonium molybdate, pts. wt. 3-4 sodium polyacrylate, 6-8 pts. wt. Bullacta exarata shell powder, 5-6 pts. wt. EDTA chelated manganese, 5-6 pts. wt. EDTA chelated magnesium, 5-6 pts. wt. EDTA chelated copper, 6-7 pts. wt. amino acid chelated iron, 6-7 pts. wt. amino acid chelated calcium, 20-30 pts. wt. seabird excrement, 3-4 pts. wt. phosphogypsum, 15-25 pts. wt. fish scraps, 5-8 pts. wt. wood rot fungi residue, 5-6 pts. wt. ammonium dihydrogen phosphate and 6-10 pts. wt. sugarcane fiber. The soil conditioner is prepared by (a) sun drying seabird excrement, mixing sun dried seabird excrement with phosphogypsum and grinding to obtain powder, mixing the obtained powder with B.exarata shell powder and fish scraps, placing the obtained mixture in a sealed container and steaming for 40-60 minutes, removing the mixture and cooling to room temperature to obtain mixture (m1), (b) loading the mixture (m1) into the fermentation tank and adding sodium polyacrylate, wood rot fungi residue and sugar cane fiber to the mixture (m1) and performing composting fermentation, turning the fermenting material for every 5-6 days for 1 time, allowing the materials to ferment for a month to obtain fermented mixture, (c) mixing ammonium molybdate, EDTA chelated manganese, EDTA chelated magnesium, EDTA chelated copper, amino acid chelated iron, amino acid chelated calcium and ammonium dihydrogen phosphate and crushing to obtain powder, grinding the obtained powder to obtain fine powder and (d) mixing the obtained fine powder with fermented mixture obtained in step (b) to obtain mixture (m2), granulating the mixture (m2) to obtain 3-5 mm size pellets, spraying water over the obtain pellets to wet the surface of the pellets and then spraying mica powder over the wet surface of the pellets, drying the obtained pellets and cooling. An INDEPENDENT CLAIM is included for method of preparing the mixed fertilizer which involves (a) mixing dried chicken manure, dried sheep manure, fruit residue, soybean straw powder, oat hulls and fig leaf powder, spraying washed rice water over the obtained mixture and adding Trichoderma, composting the obtained mixture at room temperature for 15-25 days to obtain fermented mixture (f1), (b) drying and crushing urea, red jade soil, monoammonium phosphate, potassium sulfate, ammonium bicarbonate, boric acid and celestite powder respectively to obtain powders, grinding the powders to obtain fine powders, loading the obtained fine powders into a stirrer and stirring uniformly for 30 minutes at 200-400 rotation/minute and inletting 60-80 degrees C hot air into the stirrer while stirring to obtain mixed powder, (c) mixing the fermented mixture (f1) obtained in step (a) and mixed powder obtained in step (b) to obtain mixture, performing extrusion granulation to obtain pellets, mixing C.pileare shell powder with water and spraying over the surface of the obtained pellets to obtain coated pellets and (d) adding remaining raw material to the coated pellets obtained in step (c) and packing.