Sterilizing agricultural chemical composition containing amistar

The invention relates to a bactericidal pesticide composition containing azoxystrobin, which comprises the azoxystrobin and dimethomorph as effective drug ingredients, and acceptable auxiliary elements in pesticide, wherein the weight ratio of the azoxystrobin to the dimethomorph is between 1 to 40 and 60 to 1, preferably between 1 to 20 and 30 to 1. Through compound of the drug ingredients of different action systems and modes, the composition can effectively reduce application amount of each single preparation, expand sterilization spectrum and delay drug resistances of plants, can be used for controlling black shank of tobacco, plagues and downy mildew of crops such as grains, cotton, fruits, vegetables and the like, has the effect remarkably superior to the single preparation of the two drug ingredients, and has remarkable popularization value.