【背景】在中国，苹果蠹蛾和梨小食心虫经常混合发生，但有关苹果蠹蛾迷向设置对梨小食心虫影响的研究却较少。【方法】在苹果蠹蛾和梨小食心虫同时发生的果园中设置2种迷向发散器，使用三角胶粘式信息素诱捕器监测2种昆虫的发生动态，以观察苹果蠹蛾性信息素是否会对梨小食心虫产生诱捕效果或类似的迷向作用。【结果】无论是否设置性信息素迷向发散器，苹果蠹蛾性信息素诱捕器均能诱集到梨小食心虫的雄性成虫。在2009~2011年的田间试验中，苹果蠹蛾性信息素诱捕器对梨小食心虫雄性成虫的诱集量最多能达梨小食心虫性信息素诱捕器的1.1倍，占2种诱捕器诱集总量的51.7％。在设置性信息素迷向发散器的果园中，梨小食心虫雄性成虫的诱集量受苹果蠹蛾性信息素迷向发散器的影响而下降：相比无迷向设置的对照果园，同时设置2种昆虫迷向发散器的果园中，苹果蠹蛾性信息素诱捕器内的梨小食心虫雄性成虫诱集总量最高下降了90.9％，梨小食心虫自身性信息素诱捕器内的梨小食心虫雄性成虫诱集总量最高下降了92.4％；在仅设置苹果蠹蛾性信息素迷向发散器的果园中，苹果蠹蛾性信息素诱捕器内的梨小食心虫雄性成虫诱集总量最高下降了87.5％，梨小食心虫性信息素诱捕器内的梨小食心虫雄性成虫诱集总量最高下降了60.6％。【结论与意义】苹果蠹蛾迷向发散器对于梨小食心虫雄性成虫存在“迷向”作用。在2种害虫同时发生的情况下使用2种迷向发散器，对于2种害虫能够达到比较好的防治效果。%Background] In China, the oriental fruit moth (OFM), Grapholita molesta (Busck) and the codling moth (CM), Cydia pomonella (L.) often occur in orchards simultaneously. However, the impacts of CM sex pheromone mating disruption dis￣pensers on trapping OFM which infests at the same time have not been observed. [Method] In two infested orchards, mating disrup￣tion for CM and OFM were performed, while sticky delta traps loaded with both sex pheromones were deployed to observe whether there were trappings and similar "mating disruption" effects of CM sex pheromone onto OFM male adults. [Result] The CM sex pheromone traps attracted male OFM adults, irrespective of the type of dispensers. In field trials between 2009 and 2011, CM traps caught as many male OFM as were lured by its own pheromone. Within orchards applied CM and OFM dispensers, lured OFM de￣creased by the performance of CM dispensers. OFM lured by CM traps mostly reduced by 90. 9%, and OFM lured by OFM traps mostly reduced by 92.4%. Within orchards only applied CM dispensers, OFM lured by CM traps mostly reduced by 87.5%, and OFM lured by its own traps mostly reduced by 60.6%.[Conclusion and significance] CM pheromone dispensers also have a"mating disruption effect" on OFM. Applying both dispensers within infested orchards could improve the management of both pests.
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