Bactericide composition with synergistic effect and preparation method thereof

The invention discloses a bactericide composition with a synergistic effect. The bactericide composition is prepared from bupirimate, epicatechin, gallic acid monohydrate and a synergist. The bactericide composition disclosed by the invention has a good prevention and treatment effect on powdery mildew of cucumbers and can be used for well controlling the development of powdery mildew diseases. The synergist has an obvious synergistic effect on the sterilization and disease prevention effects of bupirimate fungicides, the use effect of the fungicides is improved, and the application range of the fungicides is widened. 本发明公开了一种具有增效作用的杀菌剂组合物，组分包括乙嘧酚磺酸酯、表儿茶素、没食子酸单水合物和增效剂。本发明所述杀菌剂组合物对黄瓜白粉病具有良好的防治效果，能够很好地控制白粉病病害的发展。且本发明所述增效剂对乙嘧酚磺酸酯类杀菌剂的杀菌防病效果具有明显的增效作用，提高了杀菌剂的使用效果，拓宽了本发明所述杀菌剂的应用范围。