NOVELTY - Fertilizer comprises 30-45 pts. wt. corn straw, 50-70 pts. wt. corn core, 15-20 pts. wt. dittany, 10-15 pts. wt. coal slag, 25-35 pts. wt. humus, 20-30 pts. wt. dry duck manure, 2-4 pts. wt. agar, 8-14 pts. wt. soybean curd residue, 10-15 pts. wt. quartz sand, 3-4 pts. wt. beneficial bacteria, 6-8 pts. wt. calcium nitrate, 2-4 pts. wt. sodium selenite, 8-10 pts. wt. phosphate fertilizer, 9-13 pts. wt. ammonium chloride, 7-10 pts. wt. potassium permanganate, 15-20 pts. wt. shell powder, 5-8 pts. wt. bamboo carbon powder, 3-4 pts. wt. coating agent and balanced amount of water.    USE - Fertilizer used for planting plants on hillside.    ADVANTAGE - The fertilizer ensures slow release effect, and reduces fertilizer dosage and increases economic benefit.    DETAILED DESCRIPTION - Fertilizer comprises 30-45 pts. wt. corn straw, 50-70 pts. wt. corn core, 15-20 pts. wt. dittany, 10-15 pts. wt. coal slag, 25-35 pts. wt. humus, 20-30 pts. wt. dry duck manure, 2-4 pts. wt. agar, 8-14 pts. wt. soybean curd residue, 10-15 pts. wt. quartz sand, 3-4 pts. wt. beneficial bacteria, 6-8 pts. wt. calcium nitrate, 2-4 pts. wt. sodium selenite, 8-10 pts. wt. phosphate fertilizer, 9-13 pts. wt. ammonium chloride, 7-10 pts. wt. potassium permanganate, 15-20 pts. wt. shell powder, 5-8 pts. wt. bamboo carbon powder, 3-4 pts. wt. coating agent and balanced amount of water. The coating agent comprises 1-2 pts. wt. divinyl benzene, 4-6 pts. wt. calcium oxide, 3-5 pts. wt. melamine formaldehyde resin, 6-9 pts. wt. isopropyl alcohol, 3-5 pts. wt. bamboo carbon powder, 2-4 pts. wt. acetic acid, 1-2 pts. wt. glycerin, 8-10 pts. wt. limestone powder, 0.5-1 pts. wt. sulfuric acid and balanced amount of water. An INDEPENDENT CLAIM is included for a method for preparing fertilizer, which involves:    (A) crushing and mixing corn straw, corn core and dry duck manure;    (B) soaking obtained mixture in water for 2-3 days;    (C) mixing soaked materials with dittany, coal slag and humus;    (D) mixing agar, soybean curd residue and beneficial bacteria and water to obtain paste;    (E) crushing and drying obtained mixture;    (F) adjusting water content of mixture to 40%;    (G) stirring paste with calcium nitrate, sodium selenite, sodium phosphate, ammonium chloride, potassium permanganate and remaining component with water for 30-40 minutes;    (H) mixing shell powder and bamboo carbon powder;    (I) granulating and drying obtained mixtures in a machine;    (J) film-coating obtained granules;    (K) drying granule at 60-80 degrees C for 10-15 minutes;    (L) coating obtained with coating agent; and    (M) drying coated granule to obtain product.