不同性诱产品对小菜蛾诱集效果比较及对其种群动态监测

在北京和上海两地对国内4种小菜蛾性诱剂和国外2种性诱剂的诱捕效果进行了田间试验，并比较了水盆和灯光的诱杀效果。结果表明，中国科学院动物研究所和北京中捷四方有限公司的性诱剂诱杀效果显著优于其他诱芯，两者之间无显著差异（p>0.05），水盆诱捕效果明显优于灯诱。用筛选的最优诱芯,采用水盆诱集法监测了2007-2010年度北京延庆地区小菜蛾的种群动态，该地区小菜蛾不同年度间种群差异显著，因此，每年和常年监测可为小菜蛾的防治提供更准确的信息。

Evaluation of the trapping efficacy of different sex pheromone lures to Plutella xylostella (L.) and the monitoring of its population dynamics

Field trials were conducted in Beijing and Shanghai for trapping efficacy of six kinds of sex pheromone lures to Plutella xylostella (L.), with water and light traps as the controls. The results showed that pheromone lures with the best trapping efficacy were products from the Institute of Zoology, Chinese Academy of Sciences and Beijing Zhongjiesifang Trade Co., Ltd. No significant difference was found between the two best lures （p>0.05）. Moreover, they were significantly better than the other lures. The trapping efficacy of water traps was higher than that of light traps. The population dynamics of P. xylostella in Yanqing County of Beijing was monitored by using water basin traps, and the results showed that the population dynamics differed significantly annually. Therefore, an annual and long term monitoring is necessary to provide exact information for P. xylostella control.