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运用复合经营、保护与释放天敌等综合措施对杨树天牛进行了生态控制研究。结果表明:杨树复合经营、保护天敌与释放肿腿蜂的模式对杨树天牛的抑制效果最佳,其有虫株率、平均虫口密度和相对虫口密度较对照组分别下降66.0%、98.3%和41.5%;释放肿腿蜂并与白僵菌结合的防治效果也明显提高。此外,肿腿蜂释放后可在杨树林间形成野外种群,并对杨树天牛具有很好的持续控制作用。据此,推荐在杨树种植区大面积实施复合经营,辅以释放肿腿蜂,以达到生态控制天牛的目的。
Using composite management, protection and release of natural enemies and other comprehensive measures on the poplar Tiancao ecological control. The results showed that the poplar tree management, natural enemies protection and the release of swollen-legged bee had the best inhibitory effect on poplars, which decreased by 66.0%, 98.3% and 95% respectively compared with the control group 41.5%; the release of swollen leg bee and the combination of Beauveria bassiana control effect is also significantly improved. In addition, the release of swollen legs after the formation of poplar in the wild population, and the poplar has a very good sustainable control. Accordingly, it is recommended to poplar areas in the implementation of large-scale composite management, supplemented by the release of swollen legs bee, in order to achieve the goal of ecological control of terrestrial cattle.