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香蕉扁象Odoiporus longicollis Olivier是我国香蕉产区最重要的钻蛀害虫,以幼虫在蕉茎内取食,造成大量蛀道,危害严重。此虫年发生6代,世代重叠,成虫白天栖息于假茎枯烂叶鞘内侧,夜出活动,产卵前期较长。老熟幼虫在旧蕉茎内越冬,每年成虫种群发生有两个高峰期,分别为4—5月和9—10月。采用历期预测法或卵巢分级预测法,确定防治适期,用化学农药喷杀产卵前期的成虫;以及清除枯烂叶鞘,砍除隔年留头老蕉茎,消灭越冬幼虫,是目前防治此虫比较有效的措施。
Banana flat icon Odoiporus longicollis Olivier is the most important borer pests in the banana producing area of our country. The larvae feed on the banana stems, resulting in a large number of tunnels, causing serious damage. This pest occurs 6 generations, generations overlap, adults during the day habitat in the false stem rot rot sheath medial, night out activities, pre-spawning longer. The mature larvae winters in the stems of old banana plants. There are two peak periods of adult larvae per year, which are April-May and September-October respectively. Using the predictive method of ovarian or ovarian grading prediction method to determine the appropriate period of prevention and control, chemical pesticides spray spawning pre-adult adults; and the removal of rotten leaf sheath, cut the head of the old banana stem next year to eliminate overwintering larvae, is the current prevention and treatment Worm more effective measures.