TECHNOLOGY FOCUS - BIOLOGY - Preferred Components: The biocontrol streptozotocin contains 3-9x 109 cfu/g, preferably 6x 109 cfu/g of Bacillus subtilis, 1-2x 109 cfu/g, preferably 1.5x 109 cfu/g of Trichoderma harzianum. The enzyme active material is enzyme protein powder, and is extracted from bean of the active enzyme. The mass ratio of protein powder:enzyme is 100-300:1, preferably 200:1. The bio-bacterium fertilizer is in the form of liquid or powder. Preferred Method: The biocontrol streptozotocin is prepared by culturing Bacillus subtilis strain under aseptic conditions and then fermenting to obtain fermentation liquid, concentrating the liquid to obtain Bacillus subtilis spore powder, culturing Trichoderma harzianum under sterile condition and then fermenting to obtain culture medium, immersing the medium into water to obtain Trichoderma harzianum suspension, concentrating and drying the suspension to obtain Trichoderma harzianum spore powder, and mixing Bacillus subtilis spore powder and Trichoderma harzianum spore powder at a ratio of 3-9:1-2. The Bacillus subtilis spore powder is prepared by culturing the Bacillus subtilis strain on an inclined surface under aseptic condition at a temperature of 29 plus minus 1 degrees C for 36-48 hours, concentrating the culture and cultivating the obtained strain, inoculating the medium at pH of 6.5-7, a temperature of 30 plus minus 2 degrees C under condition of 140-160 revolution per minute for 36-48 hours to obtain fermentation liquid, and concentrating and drying the liquid. The Trichoderma harzianum spore powder is prepared by culturing the Trichoderma harzianum strain on an inclined surface under aseptic condition at a temperature of 29 plus minus 1 degrees C for 48 hours, concentrating the culture and cultivating the obtained strain, inoculating the medium at pH of 6.5-6.8, a temperature of 30 plus minus 2 degrees C under condition of 160-200 revolution per minute for 36-48 hours to obtain fermentation liquid, and concentrating and drying the liquid to obtain 15-25% of mycelium, inoculating the mycelium in a fermentation tank, performing the solid fermentation of culture medium and soaking into water to prepare suspension.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The nanometric silicon dioxide is gas-phase silicon dioxide, and has a grain diameter of 30-40 nm.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The surfactant is a surfactant of vegetable origin obtained by pulverizing dry tea cake and soaking in water for 48 hours and then filtering the supernatant. ACTIVITY - Fertilizer; Pesticide.