The invention belongs to the technical field of pesticides, and relates to 11 bactericide compositions for mainly preventing and treating
crop diseases caused by
pyricularia oryzae and
colletotrichum gloeosporioides. The compound YJY-22 provided by the invention is novel in structure and unique in action mode, and has no
cross resistance with isoprothiolane, fenoxanil, pyraclostrobin, tricyclazole,
azoxystrobin,
mancozeb,
captan, difenoconazole,
prochloraz,
chlorothalonil and
tebuconazole. As the action mechanism of the compound YJY-22 is different from that of the medicament, and the compound YJY-22 and the medicament have no
cross resistance, the compound YJY-22 and the medicament are compounded, so that the sterilization range can be expanded, the sterilization effect can be enhanced, the
drug resistance of phytopathogen can be delayed, the safety to crops is good, the prevention and control spectrum is expanded, and the requirements of
pesticide reduction and synergism are met.