营口市区白蛾周氏啮小蜂对美国白蛾控制的研究

Research on Fall Webworm Control with Chouioia cunea Yang in Yingkou Area

[目的]为研究营口地区美国白蛾的生物防治提供理论依据。[方法]通过对营口市6个地点进行美国白蛾检测,并放置柞蚕蛹(白蛾周氏啮小蜂)实验分析。[结果]防治区与对照区有虫株率和虫口密度均存在极显著差异,第1代白蛾防治区比对照区有虫株率减退率为34.3%;防治区比对照区网幕密度减退率为17.83网/株;第2代白蛾防治区比对照区有虫株率减退率为35.1%;防治区比对照区网幕密度减退率为23.78网/株。[结论]白蛾周氏啮小蜂在营口市区能够有效抑制美国白蛾的发生。

Providing the theoretical basis for the study of biological control of fall webworm in Yingkou area. [Method] Based on the six sites in Yingkou City And placed cocoon chrysalis （Chouioia cunea） experimental were analyzed. [Result] Prevention and control zone district worm strain rate and population density were significant different. The first generation of white moth pest prevention area strain rate of decline was 34.3% compared to the control area. Prevention area than the control area network density loss was 17.83%. Second-generation white moth pest prevention area strain rate of decline was 35.1%compared to the control area. Prevention area than the control area network density loss was 23.78%. [Conclusion] Chouioia cunea in urban area could be effectively suppressed Yingkou fall webworm occurs.