Bactericidal composition for preventing and treating papaya black spot

The invention belongs to the technical field of papaya disease prevention and treatment, and particularly relates to a bactericidal composition for preventing and treating papaya black spot. According to the bactericidal composition for preventing and treating the black spot disease of the papaya, the active ingredients of the bactericidal composition are formed by compounding oxathiapiprolin and silthiopham, or compounding oxathiapiprolin and benzovindiflupyr according to the mass ratio of (1 to 200): (200 to 1). The bactericidal composition disclosed by the invention is formed by compounding the oxathiapiprolin and the silthiopham or compounding the oxathiapiprolin and the benzovindiflupyr, is different from the existing reported compounding formula, and has novelty. Indoor experiment research finds that the compound formula has a synergistic effect on inhibition of growth of papaya black spot pathogenic bacteria hyphae, the prevention and treatment effect on papaya black spot can be improved, in addition,