为了阐明云南省内白背飞虱的迁飞路径,于2012年5月下旬在云南勐海县勐遮镇曼燕村开展了白背飞虱田间种群标记释放回收试验。试验后共收集全省31个站点测报灯下飞虱虫体,经过室内显微镜镜检,确认在耿马站、双江站分别收到标记虫1头、2头。借助美国国家大气与海洋局与澳大利亚国家气象局共同开发研制的大气质点轨迹分析平台模型HYSPLIT和气象图形分析软件GrADS对这两个迁飞过程进行迁飞路径模拟与天气学背景分析。结果表明:1)2012年5月下旬勐海白背飞虱迁出种群可以进入滇西南临沧稻区,白背飞虱的实际迁飞路径与HYSPLIT轨迹模拟结果一致;2)两个迁飞过程中因运载气流不强,迁飞距离均不远,西南气流与东南气流的辐合交汇是导致集中降虫的主要气象因子。这些结果不仅可以明确云南省内白背飞虱的实际迁飞路线,亦可证实通过HYSPLIT轨迹模拟平台进行白背飞虱迁飞路径研究的确是一种简单有效的技术手段。

Hybrid Single Particle Lagrangian Integrated Trajectory (HYSPLIT) model and Grid Analysis and Display System (GrADS) were used to elucidate the migration path and landing mechanisms of white-backed planthoppers(Sogatella furcifera Horváth). Adult planthoppers in Menghai county, Yunnan Province were marked using spray method and released for 7 consecutive days from 24^th May to 30^th May, 2012. Subsequently, lamp trap method was used to collect the marked adults at 31 County sites of Yunnan. Microscopic analysis verified that one marked adult was collected at Gengma site, and two at Shuangjiang site. In late May, planthoppers can migrate from Menghai to Lincang site and the actual migration path was consistent with the HYSPLIT-simulated path. The migration distance of the two marked planthoppers was short because of the slow wind speeds. The convergence of southwest and southeast airflow was the main meteorological factor for the concentrated landing. These results demonstrated that planthoppers at Menghai rice producing areas were the source of planthoppers at Lincang rice producing area. We also verified that HYSPLIT is a simple and effective method to simulate the migration path of planthoppers.