It is concluded that the action is mainly carried out by the cupric ion,and amino-acid can enhance the penetration of the cupric ion into the germ membrane and plant skin.

• 在混合氨基酸铜络合物中，起杀菌作用的主要是铜离子，氨基酸可以增加铜离子对植物病菌细胞膜的通透性。