携菌赤眼蜂防治亚洲玉米螟效果的研究

在田间评价了携带昆虫致病细菌的松毛虫赤眼蜂对亚洲玉米螟的防治效果。结果表明,携带病原细菌的赤眼蜂寄生能力与未携带病原细菌的赤眼蜂无显著差异。释放携带病原细菌的赤眼蜂的防治效果比单纯释放赤眼蜂的高,最高达15.21%,平均为13.95%;携带病原细菌的赤眼蜂在田间的寄主搜索和寄生活动有助于病原细菌在田间的扩散,从而提高残留玉米螟幼虫的死亡率。

Studies on the Control of Ostrinia furnacalis by Using Pathogenic Bacterium Carried by Trichogramma dendrolimi

The effect of Trichogramma dendrolimi carrying Bacillus thuringiensis on controlling Ostrinia furnacalis was evaluated in cornfield. The results showed that the parasitism capacity of the Trichogramma carrying bacteria was not different from that of Trichogramma without carrying the microbial. But the controlling efficiency was 13.95% higher than the later on average, 15.21% the highest. Search of host plant and parasitism activities of Trichogramma dendrolimi in the field was helpful to the transmission of pathogenic bacterium, therefore, increased the mortality of Ostrinia furnacalis larvae remained in the fields.