利用螟黄赤眼蜂防治桐花树毛颚小卷蛾试验

One experiment on the controlling of the Lasiognatha cellifera(Meyrick) by the Trichogramma chilonis

螟黄赤眼蜂能寄生在桐花树毛颚小卷蛾体内,因此,在广西壮族自治区的钦州、北海、防城港等市红树林区域,进行了利用螟黄赤眼蜂防治桐花树毛颚小卷蛾的试验。结果表明:在3个示范区螟黄赤眼蜂对桐花树毛颚小卷蛾的平均防治效果(校正的寄生率)达到了75.73%,螟黄赤眼蜂在防治区的寄生率和对照区的寄生率差异显著。3个示范区放蜂总量为2 800万头以上,防治总面积373 hm2,共计挽回经济损失3 275.97万元,产生生态价值14 021.16万元。

The parasitism of I.asiognatha cellifera （Meyrick） using Trichogramma chilonis were studied in laboratory. The Lasiognatha cellifera（Meyrick） was conducted by Trichogramma chilonis in mangrove of Qinzhou, Beihai, Fangchenggang of Guangxi Autonomous Region. The results showed that the average effective rate of the biological controlling was 75.73%, the difference of parasitic rate between treatment and the control was significant. The released number of Trichogramma chilonis was 28 million individuals, the controlled area was 373.3 acres. Retrieved financial lost was RMB 32.76 million, the economic benefit was RMB 126. 168 million.