NOVELTY - Slow-release fertilizer comprises e.g. 8-14 pts. wt. carboxymethyl cellulose, 0.5-1 pts. wt. polyethylene glycol, 4-6 pts. wt. bentonite, 3-5 pts. wt. attapulgite, 45-47 pts. wt. wheat gluten, 7-9 pts. wt. brown sugar, 30-37 pts. wt. sawdust, 0.01-0.03 pts. wt. chlormequat, 40-45 pts. wt. earthworms, 12-14 pts. wt. urea, 1-2 pts. wt. manganese sulfate, 8-13 pts. wt. potassium sulfate, 5-7 pts. wt. nano carbon powder, 12-17 pts. wt. phosphogypsum, 8-13 pts. wt. EM microbial inoculum, 11-14 pts. wt. soil amendments, and balance of water.    USE - The fertilizer is useful for reducing water loss and soil erosion.    ADVANTAGE - The fertilizer has high efficiency, and improves soil fertility.    DETAILED DESCRIPTION - Slow-release fertilizer comprises 8-14 pts. wt. carboxymethyl cellulose, 0.5-1 pts. wt. polyethylene glycol, 4-6 pts. wt. bentonite, 3-5 pts. wt. attapulgite, 45-47 pts. wt. wheat gluten, 7-9 pts. wt. brown sugar, 30-37 pts. wt. sawdust, 0.01-0.03 pts. wt. chlormequat, 40-45 pts. wt. earthworms, 12-14 pts. wt. urea, 1-2 pts. wt. manganese sulfate, 8-13 pts. wt. potassium sulfate, 5-7 pts. wt. nano carbon powder, 12-17 pts. wt. phosphogypsum, 8-13 pts. wt. EM microbial inoculum, 11-14 pts. wt. soil amendments, and balance of water, where the soil conditioner comprises 3-6 pts. wt. silicon powder, 30-36 pts. wt. peat, 4-6 pts. wt. ethylene glycol dimethacrylate, 15-18 pts. wt. bentonite, 2-3 pts. wt. sulfur, 1-2 pts. wt. polymeric ferric sulfate, 0.3-0.8 pts. wt. borax, 0.5-1 pts. wt. selenium yeast, 0.2-0.6 pts. wt. copper sulfate, 0.5-1 pts. wt. zinc acetate, 0.2-0.4 pts. wt. calcium silicate, 0.02-0.05 pts. wt. phosphate-solubilizing bacteria, 0.02-0.05 pts. wt. potassium bacteria, 0.2-0.5 pts. wt. sodium dodecylbenzenesulfonate, 2-3 pts. wt. hypromellose, 0.5-1 pts. wt. sodium alginate, 0.3-0.5 pts. wt. polyethylene glycol, and 0.2-0.5 pts. wt. glycerol. The preparation of soil conditioner comprises mixing peat, dimethyl ethylene glycol, bentonite, borax, selenium yeast, copper sulfate, zinc acetate, calcium silicate, drying and grinding into fine powder, then adding polymeric ferric sulfate, silica powder, phosphate-solubilizing bacteria, potassium bacteria, continue grinding and uniformly dispersing, mixing sodium dodecylbenzenesulfonate, sodium alginate, and granulating in a granulator, adding obtained product on to the fluidized bed, dissolving hydroxypropylcellulose into 7 times water, adding polyethylene glycol and glycerol and stirring, then spraying the particle on the surface of the fluidized-bed, cooling to room temperature, and drying. An INDEPENDENT CLAIM is also included for preparing slow-release fertilizer comprising (i) mixing wheat gluten, brown sugar, sawdust, earthworm and EM microbial inoculum until the moisture content reaches to 43-46%, uniformly stirring, sealing at room temperature, carrying out fermentation for 24-27 days, turning once during every 3-4 days, drying and crushing to obtain particle size of 0.05 mm, and grinding the obtained product in a granulator; (ii) mixing bentonite and attapulgite and heating at 100-150 degrees C for 1 hour under high-temperature, cooling to room temperature, pulverizing, soaking with 10-15% concentration of hydrochloric acid for 2-3 hours, separating solid, washing with deionized water to neutral, drying in an oven at 120 degrees C, grinding into powder, adding nano carbon, uniformly dispersing by mixing and grinding; (iii) adding phosphogypsum, urea, manganese sulfate, potassium sulfate, chlormequat, and uniformly mixing with step (ii) powder, continuing stirring, and grinding the obtained product in a granulator into granules; and (iv) adding step (iii) resulting particles into a coating pan, controlling the temperature at 40-50 degrees C, dissolving methylcellulose in water to obtain 5% solution, mixing with polyethylene glycol, spraying the obtained product on to the adheres surface, uniformly coating step (i) product on the surface, continuing spraying on surface to obtain uniform coating, drying at 50-60 degrees C under hot air, cooling to room temperature and mixing with soil conditioner.