NOVELTY - Foliar fertilizer powder is prepared using expired milk, fresh grass, rapeseed, sweet potato residue, vermiculite, industrial castor oil, effective microorganism (EM), saturated lime water, ferrous sulfate, ammonium dihydrogen phosphate, potassium nitrate, zinc chloride, precipitating agent and water. The precipitating agent comprises lime powder, 10% aluminum sulfate solution, 10% acetic acid solution, isopropanol, polyvinyl alcohol, Tween 80 (RTM: Polysorbate 80), industrial castor oil, ethanol and water.    USE - As foliar fertilizer powder.    ADVANTAGE - The foliar fertilizer powder is rich in vitamins, trace elements and amino acids, has certain ability of inorganic fertilizer, and improves crop yield, color and luster of fruit, and taste of fruits. The utilization rate of the fertilizer is improved, and exhibits effect for a long period of time.    DETAILED DESCRIPTION - Foliar fertilizer powder is prepared using 45-60 pts. wt. expired milk, 20-25 pts. wt. fresh grass, 15-20 pts. wt. rapeseed, 30-40 pts. wt. sweet potato residue, 6-10 pts. wt. vermiculite, 7-12 pts. wt. industrial castor oil, 3-4 pts. wt. effective microorganism (EM), 10-15 pts. wt. saturated lime water, 4-6 pts. wt. ferrous sulfate, 10-15 pts. wt. ammonium dihydrogen phosphate, 5-8 pts. wt. potassium nitrate, 2-3 pts. wt. zinc chloride, 8-10 pts. wt. precipitating agent and suitable amount of water. The precipitating agent comprises 15-20 pts. wt. lime powder, 12-16 pts. wt. aluminum sulfate solution (having concentration of 10%), 4-6 pts. wt. acetic acid solution (having concentration of 10%), 0.6-1 pt. wt. isopropanol, 6-8 pts. wt. polyvinyl alcohol, 1.5-3 pts. wt. Tween 80 (RTM: Polysorbate 80), 2-4 pts. wt. industrial castor oil, 4-7 pts. wt. ethanol and 50 pts. wt. water. The precipitating agent is prepared by adding ethanol and water to reaction kettle, then adding polyvinyl alcohol to the reaction kettle, heating obtained mixture at 70-80 degrees C, stirring the mixture, adding 10% aluminum sulfate solution, 10% acetic acid solution, isopropanol and lime powder, controlling reaction temperature of obtained mixture, stirring the mixture at 150-200 revolutions/minute (rpm) for 20-35 minutes, simultaneously adding the Tween 80 (RTM: Polysorbate 80) and industrial castor oil to mixture, heating and uniformly stirring obtained mixture for 30 minutes to obtain emulsion, filtering the mixture, collecting filter residue, and drying and crushing obtained product. An INDEPENDENT CLAIM is included for method for preparing the foliar fertilizer powder, which involves (a) mixing the expired milk, fresh grass, rapeseed, sweet potato residue, vermiculite and industrial castor oil, adding 10-15 times water to mixture, milling the mixture for 30-40 minutes, and adding obtained product to fermentation tank, (b) diluting EM using 5 times water to obtain microbial solution, adding the microbial solution to the product obtained in step (a), regulating pH of obtained mixture to 6-7.5, and fermenting the mixture at 25-28 degrees C for 5-8 days under stirring condition, where sterile air is passed into the fermentation tank during fermentation of mixture, (c) adding fermented product obtained in step (b) to container, ultrasonically crushing the fermented product, adding the precipitating agent, uniformly mixing obtained mixture with saturated lime water, stirring obtained mixture for 8-10 minutes, maintaining obtained mixture at static condition for 20-25 minutes for precipitation, and collecting supernatant, (d) mixing ferrous sulfate, ammonium dihydrogen phosphate, potassium nitrate, zinc chloride and remaining components of the fertilizer powder, adding supernatant obtained in step (c), and stirring obtained mixture at room temperature to obtain product.