甘肃、新疆、内蒙苹果蠹蛾成虫消长规律

苹果蠹蛾Cydia pomonella(L.)是我国重要的果树害虫和检疫对象。2005年至2010年,本研究在甘肃、新疆及内蒙古的不同区县选取了16个果园,使用性信息素诱捕器对其中的苹果蠹蛾成虫发生规律进行长期监测。结果表明,苹果蠹蛾在西北地区每年发生2.5个世代;在正常气候条件下,3个成虫发生高峰分别出现在5月上旬、7月中下旬和8月中下旬,但不同地区及同一地区不同果园之间存在较大差异;化学防治、迷向防治等防治措施对苹果蠹蛾成虫捕获量的影响较大,因此生活史研究为主的监测并不适合在上述果园中开展。综合上述研究结果,未对苹果蠹蛾的季节动态进行准确的预测,需要对苹果蠹蛾除成虫外的其他虫态的季节性变化进行详细研究,并建议选择3个以上的果园进行监测,综合各个果园的监测结果并得出结论。

Growth and patterns of population decline in Cydia pomonella adults in Gansu, Xinjiang and Inner Mongolia

The codling moth （Cydia pomonella （L.）） is a major fruit tree and quarantine pest. We used pheromone traps to monitor the occurrence of codling moth adults from 2005 to 2010 in 16 different orchards in different counties in Gansu, Xinjiang and Neimenggu Provinces. The results indicate that codling moths in these regions have 2.5 generations. Under regular climatic conditions three peaks of adults occur at the beginning of May, late July and late August, with major discrepancies in different districts, or in the different orchards of a same district. Chemical based control and mating disruption had a great impact on the number of adults trapped, therefore monitoring life history was not appropriate in orchards where these methods were implemented. It was not possible to precisely predict the seasonal dynamics of the codling moth from the data obtained because this requires much more specific data about the seasonal dynamics of other life-cycle stages. Conclusions should only be drawn from monitoring results obtained from more than 3 orchards.