Bactericidal composition containing spiroxamine and coumoxystrobin and application of bactericidal composition

The invention discloses a bactericidal composition containing spiroxamine and coumoxystrobin and an application of the bactericidal composition. The spiroxamine and the coumoxystrobin are used as main effective constituents of the bactericidal composition, and the mass ratio of the spiroxamine to the coumoxystrobin is 1-90:1-90. The bactericidal composition can be used for preventing and treating diseases of cereals, fruit trees and vegetables, has high synergism, overcomes and delays pesticide resistance of germs, and is high in bactericidal speed and long in lasting period; application cost is reduced; and the preventing and treating effect is obviously higher than that of a single agent. The bactericidal composition can be used for preventing and treating fungal diseases of crops, and can be particularly used for preventing and treating fungal diseases such as powdery mildew, rust diseases, downy mildew, late blight, scab, leaf mold, anthracnose and apple valsa canker, and the effect of the bactericidal composition is greater than that of the single agent.