NOVELTY - Bioorganic fertilizer comprises 19-23 pts. wt. ammonium chloride, 30-35 pts. wt. diammonium phosphate, 20-24 pts. wt. potassium chloride, 5-7 pts. wt. amino acids, 45-55 pts. wt. rapeseed cake, 53-58 pts. wt. drug residues, 49-55 pts. wt. plant stalks, 20-23 pts. wt. beta -cyclodextrin, 19-12 pts. wt. calcium hydroxide, 10-13 pts. wt. palygorskite powder, 5-7 pts. wt. efficient microorganisms, 8-10 pts. wt. soil conditioning agent, and water (suitable amount).    USE - The bioorganic fertilizer, preferably slow-release bioorganic fertilizer is useful for improving crop quality and water retention property of soil.    DETAILED DESCRIPTION - Bioorganic fertilizer comprises 19-23 pts. wt. ammonium chloride, 30-35 pts. wt. diammonium phosphate, 20-24 pts. wt. potassium chloride, 5-7 pts. wt. amino acids, 45-55 pts. wt. rapeseed cake, 53-58 pts. wt. drug residues, 49-55 pts. wt. plant stalks, 20-23 pts. wt. beta -cyclodextrin, 19-12 pts. wt. calcium hydroxide, 10-13 pts. wt. palygorskite powder, 5-7 pts. wt. efficient microorganisms, 8-10 pts. wt. soil conditioning agent, and water (suitable amount). The soil conditioning agent comprises 10-20 pts. wt. clay, 1-2 pts. wt. nanocarbon powder, 4-5 pts. wt sodium metasilicate, 17-19 pts. wt. methyl methacrylate, 3-4 pts. wt. selenium yeast, 2-3 pts. wt. copper sulfate, 2-3 pts. wt. zinc gluconate, 1-2 pts. wt. magnesium chloride 2-3 ammonium molybdate, 1-2 pts. wt. boric acid, 4-6 pts. wt. dipentaerythritol hexaacrylate, 35-40 pts. wt. vinegar, 2-3 pts. wt. chitosan, 1-2 Eucalyptus, 3-4 pts. wt. hydroxypropyl methacrylate, 3-4 pts. wt. diatomite, and 2-3 pts. wt. methyltriethoxysilane. The soil conditioning agent is obtained by uniformly mixing the above-mentioned methyl methacrylate, dipentaerythritol hexaacrylate, hydroxypropyl methacrylate, clay, nanocarbon powder, Eucalyptus oil, diatomite and methyltriethoxysilane with the remaining raw materials except vinegar, mixing the mixture with vinegar, and stirring the mixture in high speed disperser. An INDEPENDENT CLAIM is included for method for preparing the above-mentioned bioorganic fertilizer, which involves (a) mixing the above-mentioned ammonium chloride, diammonium phosphate, potassium chloride, amino acids, lime and palygorskite powder with water, adding the above-mentioned soil conditioning agent with the mixture, concentrating the mixture, drying the concentrate, and granulating the dried concentrate, (b) mixing the remaining raw materials except beta -cyclodextrin, maintaining water content of the mixture at 40-48%, anaerobically fermenting at room temperature for 22-28 days, turning compost once for every 3-5 days, drying the compost, and grinding the dried compost, and (c) mixing the products obtained in steps (a) and (b), processing the mixture in fluidized-bed reactor, controlling inlet air temperature to 70-100 degrees C, dissolving the beta -cyclodextrin in 2 times water, heating the solution at 50-55 degrees C, and injecting the solution into the fluidized-bed reactor, cooling the obtained product, and sieving the cooled product.