BIOLOGICAL PESTICIDE FOR PREVENTING AND CONTROLLING RICE DISEASES AND PREPARATION METHOD THEREOF

Disclosed is a biological pesticide for preventing and controlling rice diseases and a preparation method thereof. The biological pesticide consists of the following raw materials in 5 mass fraction: 15% of Mac/eaya cordata extract, 15% of dihydrochelerythrine, 4% of validamycin, 4% of aryl polyether phosphate, 1.6% of high-performance sulfonate, 0.2% of xanthan gum, 1.2% of magnesium aluminum silicate, 4% of propylene glycol, 0.25% of benzisothiazolinone, 0.4% of organic silicon defoamer, and the remaining amount is water. In the preparation process of the application, the addition of Mac/eaya cordata extract is beneficial to inhibiting the growth and 10 reproduction of pathogenic fungus in the rice growth process, and the addition of validamycin can inhibit the growth and reproduction of pathogenic fungus and promote the robust growth of rice, thus achieving a good effect of preventing and controlling rice diseases. The biological pesticide for preventing and controlling rice diseases prepared by the application has a good effect of disease prevention and synergistic effect, and is safe, effective and convenient to use.