桃蠢螟是向日葵的主要虫害之一。近两年来，由于产业结构的调整，油葵种植面积不断扩大，桃蠢螟也开始在冀中南地区的涉县发生危害，一般受害因产量损失达２０％以上。 该幼虫蛀食籽粒，使籽粒形成空壳，为害重者可将整个花盘上的种子全部吃光。 该虫一年发生２～５代，以老熟? Peach Borer is one of the major pests of sunflower. In the past two years, due to the adjustment of industrial structure, the area under oil sunflower cultivation has been constantly expanding. Peach Bombye also started to harm in the Shexian County in central-southern China. Generally, the damage suffered as a result of the loss of production reached more than 20%. The larvae eaten grain, so that the formation of shell empty shell, the weight of the entire face plate can be eaten all the seeds. The worm occurs 2 to 5 generations a year to mature?