The invention provides a
captan bactericidal composition, the composition comprises an
active ingredient A and an
active ingredient B, wherein the
active ingredient A is
captan, the active ingredient B is selected from one of
propamocarb (or
propamocarb hydrochloride), cyazofamid, oxadixyl, cymoxanil,
metalaxyl (
metalaxyl-M), iprovalicarb, fosetyl-aluminum, dimethomorph and dithianon, and the bactericidal composition contains the following ingredients by weight percent: 2-78% of the active ingredient A, namely the
captan, 2-78% of the active ingredient B, namely the
propamocarb (or the propamocarb
hydrochloride), the cyazofamid, the oxadixyl, the cymoxanil, the
metalaxyl (metalaxyl-M), the iprovalicarb, the fosetyl-aluminum, the dimethomorph or the dithianon, and the balance of additives and excipients. The bactericidal composition containing the captan and the medicament can effectively reduce the using amount of
pesticide, reduce the amount of residue of the
pesticide on crops, reduce the environmental
pollution and defer the generation of medicament resistance, and is further safe for human and animal and good in environmental compatibility.