一、炭疽病、褐斑病在病害始发期,选用50%多菌灵可湿性粉剂500~800倍液或75%甲基托布津可湿性粉剂800~1000倍液喷雾防治,每隔7天喷药1次,连喷2~3次。二、枯萎病、黄萎病这两种病害以连作3年以上的棉田 First, anthracnose, brown spot In the disease onset, the selection of 50% carbendazim WP 500 to 800 times or 75% thiophanate-methyl WP 800 to 1000 times the spray control, every 7 days Spraying 1, and even spray 2 to 3 times. Second, the wilt disease, Verticillium wilt these two diseases even for more than 3 years of cotton fields