▎ 摘　　要

NOVELTY - Organic fertilizer comprises 42-57 pts. wt. pig manure, 24-36 pts. wt. bean cake powder, 5-10 pts. wt. eggshell, 6-12 pts. wt. pomelo fruit pulp, 4-6 pts. wt. urea, 9-16 pts. wt. sodium dihydrogen phosphate, 10-14 pts. wt. nano graphene, 18-25 pts. wt. plant ash, 6-10 pts. wt. chitin, 8-14 pts. wt. rice bran and 8-12 pts. wt. black locust flower. USE - The organic fertilizer is useful for controlling phosphorus leaching. ADVANTAGE - The organic fertilizer exhibits synergistic effect, prevents the loss of phosphorus, improves the utilization rate and increases the economic benefit. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for producing the organic fertilizer comprising (i) squeezing the pomelo fruit pulp into juice and enzymatically hydrolyzing at 33-42 degrees C and pH of 5-6, inactivating the enzymatic hydrolysate and filtering and centrifuging to obtain a pomelo fruit hydrolysate, (ii) crushing the black locust flower to 40-60 mesh, impregnating with 45-66 %mass aqueous ethanol solution for 3-5 hours and centrifuging and filtering the supernatant to obtain an extract, (iii) mixing pig manure, bean cake powder, urea, humic acid, sodium dihydrogen phosphate, pomelo fruit hydrolysate, chitin and rice bran and adding 60-72 %mass water, adding 0.2-0.4 wt.% bacteria complex to carry out compost fermentation for 18-25 days and piling up for every 16-20 hours to obtain a fermentation product, (iv) crushing the eggshell to 120-150 mesh to obtain eggshell powder, adding the powder into the extract and ultrasonically oscillating evenly to obtain an eggshell powder suspension and (v) uniformly mixing the nano graphene, fermentation product, eggshell powder suspension and plant ash in a high-mixer and drying the mixture at 35-48 degrees C.