螟黄赤眼蜂对向日葵螟的防治效果研究

Study on Control Efficacy of Sunflower Moth with Trichogramma Chilonis

为了明确黑龙江省螟黄赤眼蜂对向日葵螟的防治效果,在有效控制向日葵螟为害的同时,保护有益天敌生物及生态环境,满足向日葵螟绿色防控的需求,在黑龙江省甘南县开展了螟黄赤眼蜂防治向日葵螟试验。结果表明,螟黄赤眼蜂防治向日葵螟卵粒寄生率达到82.1%,卵粒校正寄生率达到80.4%,平均防效为72.13%,向日葵平均增产率26.42%,在黑龙江省应用螟黄赤眼蜂能有效控制向日葵螟为害。

In order to define the control efficacy of trichogramma chilonis against sunflower moth, to protect the biological and ecological environment of good natural enemy at the same time, and to meet the needs of biological control for sunflower moth, experiments were carried out to test trichogramma chilonis controlling of sunflower moth in Gannan county, Heilongjiang province. The results showed that the parasitic rate of triehogramma chilonis on eggs of sunflower moth was 82.1% in the sunflower field, the corrected parasitism of host eggs of trichogramma chilonis on eggs of sunflower moth was 80.4% in the sunflower field, the mean control efficiency of trichogramma chilonis against sunflower moth was 72.13%, the average yield of sunflower increased 26.42%, and trichogramma chilonis effectively decreased the harm of sunflowers moth in this region.