北京地区越冬代旋幽夜蛾迁飞的虫源分析  

Analysis on the Population Status of the Overwintering Generation of the Clover Cutworm Scotogramma trifolii (Lepidoptera: Noctuidae) in Beijing

作　　者：张云慧[1] 程登发[1] 姜玉英[2] 张跃进[2] 孙京瑞[1] 

机构地区：[1]中国农业科学院植物保护研究所植物病虫害生物学国家重点实验室,北京100193 [2]全国农业技术推广服务中心,北京100026

出　　处：《中国农业科学》2010年第9期1815-1822,共8页Scientia Agricultura Sinica

基　　金：国家重点基础研究发展计划(2006CB102007);国家自然科学基金(30771385);国家科技支撑计划项目(2006BAD08A01)

摘　　要：目的研究越冬代旋幽夜蛾Scotogramma trifolii在北京地区的灯下消长动态和迁飞虫源,为其预测预报和有效防治提供依据。方法2007—2009年利用垂直监测昆虫雷达、探照灯和相关设备对旋幽夜蛾的迁飞过程开展实时监测,通过GRADS图形处理软件分析其迁飞高峰期盛行的空中风场,结合Hysplit_4软件对其迁飞轨迹进行分析,探讨北京地区越冬代旋幽夜蛾迁飞扩散的虫源。结果旋幽夜蛾迁飞高峰期,卵巢发育进度集中为2—3级,雌雄性比>1,高峰期过后雌雄性比<1;夜间迁飞主要集中在风向有利风速较大的300—500m高度,持续飞行时间可达8h以上;轨迹分析显示,虫源主要来自陕西、山西北部和内蒙古鄂尔多斯、呼和浩特、乌盟等中西部地区,随偏西气流向东北、东南方向迁飞扩散。结论越冬代旋幽夜蛾具有明显的迁飞现象,根据其迁飞行为进行早期监测预警具有重要意义。Objective Research on the variation of light catch and population status of the clover cutworm Scotogramma trifolii （Lepidoptera： Noctuidae） was carried out in order to provide a basis for effective prevention and control of it in North China. Method Vertical-looking radar and related equipment were used to carry out real-time monitoring of the migratory process of the clover cutworm, and the prevalent airflow was analyzed by the software of GRADS during the migrating peak and the Hysplit_4 software was employed for analyzing their migratory trajectory. Population status of the overwintering generation moth was also discussed. ResultOvarian development concentrations at 2-3 grade and the sex ratio1 during moth occurrence peak period, but the sex ratio1 after the peak period. Simultaneous radar observations indicated that the nocturnally migrating clover cutworm mothes generally flew at altitudes of up to 600 m above ground level, with high density concentrations at about 300-500 m and these concentrations were coincident with favorable wind direction and wind speed. They can take 8 h sustainable flight in one night. Trajectory analysis of 12 h also showed that most of them came from Eerduosi, Huhehaote, Wumeng and other regions. in Inner Mongolia and some from north of Shaanxi and Shanxi provinces, migrated and diffused into northeast and southeast with the westerly airflow. Conclusion The overwintering generation of clover cutworm moth has a typical migratory habit, and it is of a great significance for eatly monitoring and forecasting them according to their migratory behavior.

关 键 词：旋幽夜蛾Scotogramma TRIFOLII 迁飞 雷达监测 虫源分析 

分 类 号：S433[农业科学—农业昆虫与害虫防治]