NOVELTY - Nano-carrier fertilizer comprises Bacillus amyloliquefaciens, Bacillus thuringiensis, Bacillus subtilis, lactic acid bacteria, matrix leaven, corn straw, peat, fly ash, mushroom residue, puffed pig manure, methyl synergistic phosphorus powder, piperonyl butoxide powder, ethephon, urea, diammonium phosphate, potassium sulfate, soapberry, amaranth, cortex meliae, Quisqualis, Chinese gall, pubescent holly root, matrine, fructus ulmi, camphor, semen momordicae, golden larch bark, nano-silicon-hydroxyapatite, organic solvent, capsule wall material and colloid.    USE - The fertilizer is useful for preventing and controlling powdery mildew in Clematis quinquefoliolata (claimed) and weeds in farmland.    ADVANTAGE - The fertilizer: has good sterilizing effect; is environmentally friendly; and does not produce drug resistance easily.    DETAILED DESCRIPTION - Nano-carrier fertilizer comprises 0.8-1 pts. wt. Bacillus amyloliquefaciens, 0.6-0.8 pts. wt. Bacillus thuringiensis, 0.5-0.7 pts. wt. Bacillus subtilis, 0.4-0.8 pts. wt. lactic acid bacteria, 1-3 pts. wt. matrix leaven, 30-35 pts. wt. corn straw, 20-30 pts. wt. peat, 30-36 pts. wt. fly ash, 10-20 pts. wt. mushroom residue, 30-40 pts. wt. puffed pig manure, 2-4 pts. wt. methyl synergistic phosphorus powder, 1-3 pts. wt. piperonyl butoxide powder, 0.4-0.6 pts. wt. ethephon, 12-16 pts. wt. urea, 10-12 pts. wt. diammonium phosphate, 6-8 pts. wt. potassium sulfate, 55-60 pts. wt. soapberry, 10-20 pts. wt. amaranth, 10-30 pts. wt. cortex meliae, 15-25 pts. wt. Quisqualis, 1-15 pts. wt. Chinese gall, 5-15 pts. wt. pubescent holly root, 5-10 pts. wt. matrine, 10-15 pts. wt. fructus ulmi, 5-15 pts. wt. camphor, 5-15 pts. wt. semen momordicae, 10-15 pts. wt. golden larch bark, 25-30 pts. wt. nano-silicon-hydroxyapatite, 10-20 pts. wt. organic solvent, 10-15 pts. wt. capsule wall material and 1-3 pts. wt. colloid. An INDEPENDENT CLAIM is also included for preparing the fertilizer, comprising: (i) proliferating microbial culture by respectively inoculating Bacillus amyloliquefaciens, Bacillus thuringiensis, Bacillus subtilis and lactic acid bacteria to a culture medium, controlling fermentation conditions until the bacterial amount or spore amount is more than 6x 109/ml to obtain a bacterial solution; (ii) performing solid-state fermentation of Bacillus thuringiensis, Bacillus subtilis and lactic acid bacterial liquid with pig manure compost, turning once a day during the solid fermentation process to ensure the solid fermentation temperature is not greater than 50 degrees C, completing fermentation after 6-8 days, and simultaneously continuing to propagate Bacillus thuringiensis, Bacillus subtilis and lactic acid until their microbial inoculum content reaches more than 5x 109/g; (iii) adding matrix leaven to corn straw, peat, fly ash and mushroom residue mixture, turning once at an interval of 1-2 days to ensure the solid fermentation temperature is not greater than 60 degrees C, completing fermentation after 8-10 days when the material turns loose, original odor of the material is absent and slight ammonia odor is present, and white hypha is generated in the stack to produce fermented material with moisture content of 35-40%, and simultaneously obtaining propagated microorganisms in the matrix leaven; (iv) mixing the material obtained in steps (ii) and (iii), ripening for 2-3 days, turning once each day, where the total number of turnings last for 2-4 times, and evaporating the moisture content in the microbial organic fertilizer to less than 30% at a temperature not greater than 60 degrees C; (v) preparation plant source extract by soaking soapberry, amaranth, cortex meliae, Quisqualis, Chinese gall, pubescent holly root, matrine, fructus ulmi, camphor, semen momordicae and golden larch bark in water for 2 hours, heating to 50 degrees C for 20 minutes, then adding 10 pts. wt cellulase (150 U activation unit), enzymolysing at 30 degrees C for 1 hour, and filtering to obtain the Chinese medicinal herbal liquid, adding 10 times the of weight of 75% ethanol to 300 pts. wt. traditional Chinese medicinal liquid, soaking for 80 minutes, heating and refluxing to 70 degrees C for 45 minutes, filtering, collecting the extract, adding 5 times the weight of 70% ethanol to the filter residue, heating to 80 degrees C for 65 minutes, filtering, collecting the extract, vacuum concentrating (0.08 MPa and 60 degrees C) to obtain an extract with relative density of 1.6 (at 65 degrees C), and spray drying to obtain the dry extract powder; (vi) mixing urea, diammonium phosphate, potassium sulfate, methyl synergistic phosphorus powder, piperonyl butoxide powder and ethephon to the dry extract powder, adding water to dissolve, mixing with the material obtained in step (iv), and uniformly stirring; and (vii) drying the obtained material in a fluidized bed, controlling the temperature to 90 degrees C and the moisture content to 10-15%, crushing, sieving to a fineness of 80 meshes, then crushing using a conveyor belt, adding nano-silicon-hydroxyapatite, capsule wall material and colloid, stirring at a speed of 2500 revolutions/minute to form an emulsion, reducing the speed to 1500 revolutions/minute, stirring for 25 minutes, then adding diluted hydrochloric acid to adjust the pH value to 3, reducing the rotating speed to 100 revolutions/minute, stirring for 1 hour/minute, heating to 50-55 degrees C, continuously stirring for 2 hours, and adding sodium hydroxide to adjust the pH value to 7.