杨扇舟蛾是杨树的主要食叶害虫。幼虫特别喜欢取食杨树顶部的嫩叶，嫩叶吃完后再转移取食中下部叶片。苗圃地虫情发生远比林网、四旁杨树为重，认真防治圃地杨扇舟蛾尤为重要。杨扇舟蛾在淮北一年发生4～5代，第一代幼虫5月上中旬开始危害，第二代幼虫7月上中旬为危害盛期，三 Yang Fan moth is poplar’s main leaf-eating pests. The larvae particularly like to eat the young leaves at the top of the poplar, and then transfer the leaves of the middle and lower leaves after the young leaves are eaten. Nursery insects occur far more than the forest network, poplar as the focus on four sides, careful prevention and control of garden Fan Yang moth is particularly important. Yang Fan moth occurs in Huaibei 4 to 5 generations a year, the first generation of larvae in mid-May began to endanger the second-generation larva in mid-July as a dangerous period, three