Bactericidal composition and pesticide containing benziothiazolinone and succinic dehydrogenase inhibitor and application thereof

The present invention discloses a bactericidal composition containing benziothiazolinone and succinic dehydrogenase inhibitor. The composition comprises two active components, a component A and a component B; the component A is benziothiazolinone, and the component B is a succinic dehydrogenase inhibitor fungicide selected from the group consisting of thifluzamide, boscalid, Penthiopyrad, Isopyrazam, biphenyl penthiopyrad, fluorine myclobutanil amide, Fluxapyroxad, penflufen, fluopyram or Benzovindiflupyr. The weight ratio of the component A and component B is 1:50-50:1, preferably 1:10-10:1. The composition can be prepared into a wettable powder, a water dispersion granule, a suspending agent and an emulsion in water for prevention and control of wheat rust, and downy mildew and epidemic diseases of vegetables, melons and fruits.