NOVELTY - Organic fertilizer comprises 70-90 pts. wt. rape straw, 6-10 pts. wt. ammonium bicarbonate, 10-20 pts. wt. diatomite, 30-45 pts. wt. cottonseed residue, 10-14 pts. wt. potassium nitrate, 3-5 pts. wt. zinc sulfate, 4-9 pts. wt. ammonium humate, 8-12 pts. wt. calcium magnesium phosphate fertilizer, 3-4 pts. wt. microbial agent, 3-5 pts. wt. additive and water (suitable amount). The additive comprises sodium lauryl sulfate, stone powder, vinyl acetate, ethanol, N,N-methylene-bis-acrylamide and water.    USE - As organic fertilizer.    ADVANTAGE - The organic fertilizer enhances hydrophilic property of surfaces of the stalks and improves viscosity.    DETAILED DESCRIPTION - Organic fertilizer comprises 70-90 pts. wt. rape straw, 6-10 pts. wt. ammonium bicarbonate, 10-20 pts. wt. diatomite, 30-45 pts. wt. cottonseed residue, 10-14 pts. wt. potassium nitrate, 3-5 pts. wt. zinc sulfate, 4-9 pts. wt. ammonium humate, 8-12 pts. wt. calcium magnesium phosphate fertilizer, 3-4 pts. wt. microbial agent, 3-5 pts. wt. additive and water (suitable amount). The additive comprises 1-2 pts. wt. sodium lauryl sulfate, 6-8 pts. wt. stone powder, 7-10 pts. wt. vinyl acetate, 6-9 pts. wt. ethanol, 2-3 pts. wt. N,N-methylene-bis-acrylamide and water (suitable amount). The additive is prepared by diluting ethanol in water, adding vinyl acetate and N,N-methylene-bis-acrylamide into the diluted mixture, stirring the mixture at 150-200 revolutions per minute (rpm) for 5-10 minutes, finally adding sodium lauryl sulfate and stone powder to the mixture, and stirring the mixture at 250-400 revolutions per minute (rpm) for 0.5-1 hours. An INDEPENDENT CLAIM is included for method for preparing the above-mentioned organic fertilizer, which involves (a) crushing rape straw into wide of 3-4 cm, adding 2-3 times water to the crushed rape straw, adding ammonium bicarbonate to the mixture, stirring the mixture at 30-35 degrees C for 14-18 days, and filtering the mixture, (b) placing the residue in microwave processor, and adjusting the power of the mixture to 230-250 W for 5-10 minutes, (c) mixing straw residue, diatomaceous earth and cottonseed with microorganisms, adjusting moisture content of the mixture to 60%, and fermenting the mixture for 6-10 days, and (d) crushing the mixture, adding the other raw materials into the mixture, adjusting moisture content of the mixture to 20%, and pelletizing the mixture.