常见的舟蛾类害虫主要有:杨扇舟蛾、杨小舟蛾、杨二尾舟蛾等。生活习性:舟蛾类成虫羽化后,白天隐伏,黄昏或夜间飞翔觅偶交尾,卵多散产或成块产于嫩叶背面或枝条上。成虫有趋光性和假死性。繁殖能力不太强,一头雌蛾可产卵100-500余粒;幼虫一般有5龄,3龄以前大多群栖叶背剥食叶肉,食量很小,仅占一生中食量的4-5%;3龄以后其食量剧增,约占一生中食量的95%以上,因此防治舟蛾幼虫一定要掌握在3龄以前进行。防治措施①切实做好虫情监测和预测预报。杨树舟蛾具有世代多,繁殖量大,大龄幼虫暴食的特点,而杨树高大,防治困难,常易猖獗成灾。必须定点、定时进行虫情动态监测和各代发生期监测。②人工杀灭越冬蛹。在全面、准确掌握越冬代幼虫发生地 Common boat moth pests mainly include: Yang Fan boat moth, Yang Xiaotie moth, Yang Erwei boat moth and so on. Habits: After the emergence of the boat moth adult, hidden during the day, twilight or night flight to find even mating, eggs and more scattered in bulk or produced on the back of young leaves or branches. Adults have phototaxis and lethality. The reproductive capacity is not too strong, a female moth can lay eggs more than 100-500; larvae are generally 5 years old, 3 years ago most of the herd back leaf peel leaves, food intake is small, accounting for only 4-5% of food intake; 3 years after its surge in food intake, accounting for more than 95% of food intake in life, so the control of larvae larvae must be mastered before the 3rd age. Prevention and control measures ① Effective monitoring and forecasting of insects. Poplar moths have more generations, breeding large, large larvae gluttony characteristics, and poplar tall, difficult to control, often rampant disaster. Must be sentinel, regular dynamic monitoring of insects and the generation of monitoring. ② artificial killing overwintering pupae. In a comprehensive and accurate grasp of the overwintering generation larvae occurred