| 2019年四川省草地贪夜蛾迁入虫源地分布及迁飞路径 |
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| 引用本文：张雪艳,封传红,万宣伍,胡高,李庆,蒋春先.2019年四川省草地贪夜蛾迁入虫源地分布及迁飞路径.植物保护学报,2020,47(4):770-779 |
| DOI：10.13802/j.cnki.zwbhxb.2020.2020813 |
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| 中文摘要:为明确2019年四川省草地贪夜蛾Spodoptera frugiperda的虫源地分布及迁入路径，利用HYSPLIT轨迹分析平台模拟草地贪夜蛾的迁入及迁出轨迹，并利用GrADS气象图形处理软件进一步分析其迁飞期间的天气背景。结果表明，草地贪夜蛾最早于2019年4月下旬迁入川西南及川南地区，其虫源主要来自云南省；5月上中旬进入大规模迁入和向北扩展期，四川盆地大部分地区见虫，最远可达川东北32.087° N；川西南及川南虫源来自我国云南省和缅甸，川东虫源来自我国贵州省，而川西、川中虫源多为川内虫源扩散而至；6月中旬本地的草地贪夜蛾进一步向北迁飞，到达四川盆地西北地区，甚至进入陕西省，除川西高原外，四川省各地均可见虫。草地贪夜蛾在四川省的整体迁飞路径表现为由南向北，再由东北向西北扩展。结合迁飞轨迹与水平风场分析发现，由孟加拉湾而来的西南暖湿气流可为草地贪夜蛾迁飞提供运载气流。 |
| 中文关键词:草地贪夜蛾 四川省 迁飞轨迹 虫源地 迁入路径 |
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| The source areas and migration routes of the fall armyworm Spodoptera frugiperda in Sichuan Province in 2019 |
| Author Name | Affiliation | E-mail | | ZHANG Xueyan | College of Agronomy, Sichuan Agricultural University, Chengdu 611130, Sichuan Province, China | | | FENG Chuanhong | Plant Protection Station of Sichuan Provincial Department of Agriculture and Rural Affairs, Chengdu 610041, Sichuan Province, China | | | WAN Xuanwu | Plant Protection Station of Sichuan Provincial Department of Agriculture and Rural Affairs, Chengdu 610041, Sichuan Province, China | | | HU Gao | College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, Jiangsu Province, China | | | LI Qing | College of Agronomy, Sichuan Agricultural University, Chengdu 611130, Sichuan Province, China | | | JIANG Chunxian | College of Agronomy, Sichuan Agricultural University, Chengdu 611130, Sichuan Province, China | chunxianjiang@126.com |
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| Abstract:In order to understand the distribution of source areas and migratory routes of Spodoptera frugiperda in Sichuan Province in 2019, the HYSPLIT trajectory analysis platform was used to simulate the immigration and emigration of S. frugiperda, and the weather background during the migration was analyzed by using the meteorological graphics processing software GrADS. The results showed that S. frugiperda immigrated into southwestern Sichuan and southern Sichuan in late April, 2019, and the source areas were mainly from Yunnan Province. In early to mid-May, S. frugiperda invaded most areas of Sichuan on a large scale, which could be found in most parts of the Sichuan Basin, up to 32.087° N in northeastern Sichuan. The pest found in southwestern and southern Sichuan came from Yunnan Province of China and Myanmar, while the pest found in eastern Sichuan came from Guizhou Province of China. After reproduction, S. frugiperda that arrived in Sichuan in early to mid-May, could migrate north and provide insect source for other areas of Sichuan and Shaanxi provinces in mid-June. Up to mid-June, S. frugiperda spread to other parts of Sichuan except the western Sichuan Plateau. The general migration path of S. frugiperda in Sichuan was from south to north, then from northeast to northwest. Combined with the analyses of migration trajectory and horizontal wind field, the southwest warm and humid airflow from the Bay of Bengal could provide a carrier airflow for the migration of S. frugiperda. |
| keywords:Spodoptera frugiperda Sichuan Province migration trajectory source area migration path |
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