黄脊竹蝗生物学特性及其天敌保护利用

黄脊竹蝗(Ceracris kiangsu Tsai)是严重危害毛竹林的主要害虫之一,通过2006—2009年在桃江县进行生物学特性观察和防治试验,基本摸清了黄脊竹蝗的生物学特性和天敌种类。该虫在湖南省桃江县一年仅发生1代,以卵在土壤中越冬,翌年5月上旬开始孵化,6月底开始羽化成虫,8月上旬开始交尾产卵,9月下旬成虫大量死亡。该虫天敌种类较多,其中卵期主要天敌为红头豆芫菁、黑卵蜂;成虫期主要天敌为鸟类、寄生蝇等。

The biological characteristics of Ceracris kiangsu and its natural enemy protection

Ceracris kiangsu is a major pest of moso bamboo forests.During 2006—2009,the observation on biological characteristics of Ceracris kiangsu and its control experiments were conducted in Taojiang County.The results showed that Ceracris kiangsu occurred 1 generation per year in Taojiang County.It overwintered as eggs in soil,began to hatch from early May of the following year,emerged adult at the end of June,began to copulate and deposit eggs from early August,and died at the last ten-day of September.There are many species of its natural enemy.The major natural enemies attacking eggs were Epicauta ruficeps and Telenomus spp.While,the main natural enemies of adult ones were birds and parasitic fly.