4种性诱剂对甜菜夜蛾诱集效果及种群动态分析.docx

4种性诱剂对甜菜夜蛾诱集效果及种群动态分析 摘 要： 甜菜夜蛾是危害蔬菜的主要害虫之一，为了推广甜菜夜蛾绿色防控技术，在北京市大兴区开展了4种性诱剂及杀虫灯对甜菜夜蛾诱捕效果比较的田间试验，并分析甜菜夜蛾在本地区的发生动态。结果表明，性诱剂诱捕器对甜菜夜蛾成虫的诱杀数量是杀虫灯的3.59倍，且虫峰明显，诱集效果明显好于杀虫灯；北京中捷四方有限公司生产的PVC性诱剂诱芯及中国科学院动物研究所生产的橡胶性诱剂诱芯诱集成虫总量分别为368.67、337.33头，单日最大诱虫量为23.67、19.67头，显著高于宁波纽康性诱剂，且在虫峰期起峰早、峰值高，更适合在本地田间生产中应用于甜菜夜蛾的田间监测及防治；通过周年监测甜菜夜蛾成虫发生动态，甜菜夜蛾在本地区始现期为4月中下旬，终现期为9月下旬至10月中旬，最高虫峰期散状分布在6月下旬至9月，极易造成秋茬十字花科作物田间危害。 关键词： 甜菜夜蛾； 性诱剂； 灯诱； 种群动态 Abstract： Beet armyworm is one of the main pests that infects the vegetables， in order to popularize the green control technology of the beet armyworm， the entrapment effect of 4 kinds of sex attractants and insecticidal lamps on beet armyworm were detected in the field experiment in Beijing Daxing， and the population dynamics of beet armyworm was analyzed. The results showed that the number of beet armyworm killed by sex pheromone entrapment was 3.59 times of the insecticidal lamps， and the insect peak was obviously better than the insecticidal lamp. The total number of beet armyworm trapped by sex pheromone PVC of Pherobio Technology Co.，Ltd and the rubber sex pheromone produced by animal research institute of Chinese Academy of Sciences were 368.67 and 337.33 beet armyworm respectively， the maximum amount of trapping was 23.67 and 19.67 in one day， which was significantly higher than rubber sex pheromone in Ningbo Newcombe， and the peak was earlier and higher in the insect peak period， they were more suitable for the monitoring and prevention of the beet armyworm in the local field. Through monitoring the number of beet armyworm for year after year， the beet armyworm began to appear in April and disappeared at September to October， the highest peak period was scattered in June to September， at when it would be very easy to cause the damage of the cruciferous vegetables in the fall stubble. Key words： Beet armyworm； Sex pheromone； Insecticidal lamps； Population dynamics 甜菜夜蛾（Spodoptera exigua）又名蛾、白菜褐夜蛾，属磷翅目（Lepidoptera）夜蛾科（Noctuidae）。该虫食性杂，对甘蓝、花椰菜、大白菜、玉米及甘薯等