摘要:
香蕉弄蝶(Erionota torus Evans),是香蕉叶部的重要害虫。在福州地区一年发生四代,世代重叠,以老熟幼虫在叶苞内越冬。调查得到8种寄生性天敌,其对香蕉弄蝶的自然控制作用良好。农药防治试验,使用溴腈菊酯、敌敌畏和马拉硫磷稀释液喷雾,均有良好效果,以第一种农药效果最佳。
Abstract:
The banana leaf skipper, Erionota torus Evans, spreading in several provinces in south China, was a severe pest infesting the leaves of bananas. The life-history and biological characters of the banana leaf skipper were observed during 1941-54, in Yongan, Shaxian and Fuzhou.The results indicated that it multiplied four generations yearly; generations were overlapping; and old instar larvae overwintered in the leaf rolls. In 1982-83, further observations were made on the biological characters. The results showed that it was four generations yearly in Fuzhou. The natural enemies of the banana leaf skipper and the natural parasitic enemy rate were investigated. 8 species of parasitic enemies were attained in the stages of eggs, larvae and pupae when they were bred in the laboratory. Deltamethrin, DDVp or Malathion was sprayed on the young larvae.They all had good(and the first had the best)effects.
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