性信息素与赤眼蜂对甘蔗条螟的协同控制

Synergetic effects of sex pheromone and Trichogramma on Chilo sacchariphagus

为探索昆虫性信息素与寄生天敌对甘蔗螟虫的协同控制作用,利用螟虫性信息素监测甘蔗条螟的发生动态,利用螟虫性信息素干扰法、赤眼蜂、性信息素与赤眼蜂相结合的方法对甘蔗条螟进行防控,比较了螟害株、枯梢株和螟害节的防控效果。结果表明:性信息素干扰和赤眼蜂相结合对甘蔗条螟的综合防控效果最好,明显优于单独使用性信息素干扰或单独使用赤眼蜂寄生的防控效果,螟害株、枯梢株、螟害节与常规防控比较相对防效分别为31.70%、48.55%和40.93%。各处理区的捕食性天敌数量和螟卵寄生也显著高于常规防控区。

Sex pheromone and parasitic natural enemy have great impact on pest management. We aim to investigate the synergetic effects of these two biological control methods on Chilo sacchariphagus. Therefore,sex pheromone mating disruption, parasitic natural enemy, or integrated management of these control method, were applied in sugar cane respectively. The results showed that integrated management of sex pheromone mating disruption and parasitic natural enemy had better effect on controlling Chilo sacchariphagus than these two methods separately. Compared to the contrast, rate of sugarcane harmed, numbers of the dead heart sugarcane and plant nodes harmed were 31.70% ,48.55% and 40.93%, respectively. Furthermore, numbers of the predators and the parasitic natural enemy in Chilo sacchariphagus eggs were more than the contrast.