十九世纪以来,杀菌剂在植物病害的防治中一直起着重要作用。据 Ogawa 估计,如果没有杀菌剂,世界上将有一半作物不能种植。目前全世界应用的杀菌剂约有100余种,配方500余个。这些杀菌剂主要应用于小麦、水稻、玉米、高梁、大麦和其它大田作物,以及果树、蔬菜、树木、观赏植物上。十多年以前,杀菌剂还多是保护剂。1968年后,有一类新的有机杀菌剂 Bactericides have played an important role in plant disease control since the 19th century. Ogawa estimates that half the world’s crops will not grow without fungicides. At present, there are about 100 kinds of bactericides used throughout the world, more than 500 formulations. These fungicides are mainly used in wheat, rice, corn, sorghum, barley and other field crops as well as fruit trees, vegetables, trees and ornamental plants. More than a decade ago, fungicides were mostly protective agents. After 1968, there is a new class of organic fungicides