我国草地贪夜蛾冬繁区和越冬区调查
2021-03-12姜玉英刘杰吴秋琳次仁卓嘎曾娟
姜玉英 刘杰 吴秋琳 次仁卓嘎 曾娟



摘要 :2019年12月-2020年3月初调查结果显示,草地贪夜蛾在我国云南、广东、海南、四川、广西、福建、贵州7省(区)的47个市(州)183个县(市、區)发生,玉米是其冬季主要寄主作物,局部地区可见为害小麦和甘蔗;福建、广东、广西、贵州在幼虫冬繁区以外地区诱到成虫。浙江、湖南、江西、重庆等4省(市)的16个市27个县(市、区)在30个点查到活虫(蛹)。验证了我国草地贪夜蛾冬繁区即周年繁殖区位于28°N以南,即1月份平均温度10℃等温线以南区域;越冬区在28°N-31°N 之间,即1月份平均温度6℃等温线到10℃等温线之间。
关键词 :草地贪夜蛾; 冬繁区; 越冬区
中图分类号: S 435.132
文献标识码: A
DOI: 10.16688/j.zwbh.2020432
Investigation on winter breeding and overwintering areas of Spodoptera frugiperda in China
JIANG Yuying1*, LIU Jie1, WU Qiulin2, CIREN Zhuoga3, ZENG Juan1
(1. National AgroTech Extension and Service Center, Beijing 100125, China; 2. State Key Laboratory for
Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural
Sciences, Beijing 100193, China; 3. Agriculture and Animal Husbandry Comprehensive Service
Center of Jiangzi County, Tibet Autonomous Region, Shigates 857400, China)
Abstract :According to field investigations during the winter from December 2019 to early March 2020, Spodoptera frugiperda was confirmed to occur in 183 counties of 47 cities in Yunnan, Guangdong, Hainan, Sichuan, Guangxi, Fujian and Guizhou, China. S.frugiperda populations surviving over the last winter primarily fed on maize, and partly lived on wheat and sugarcane. S.frugiperda adults were trapped in some regions outside the winter breeding area of Fujian, Guangdong, Guangxi and Guizhou provinces. Some larvae (or pupae) were found alive at 30 sites in 27 counties of 16 cities in Zhejiang, Hunan, Jiangxi and Chongqing. The results showed that the winter breeding area is located in the south of 28°N, which is nearly the south of the 10℃ isotherm in January. The overwintering area is between 28°N-31°N, approximately the area between the 6℃ isotherm and 10℃ isotherm in January.
Key words :Spodoptera frugiperda; winter breeding areas; overwintering areas
我国于2018年12月11日在云南省澜沧县诱到第一头境外入侵的草地贪夜蛾Spodoptera frugiperda (J.E.Smith) 成虫[1],2019年1月11日在云南省江城县首见其幼虫为害冬玉米[2]。进入2019年4月后草地贪夜蛾开始在南方省份快速蔓延[3],并扩展至北方26个省份[4]。根据其发生为害规律,我国提出了周年繁殖区(冬繁区)、迁飞过渡区和重点防范区的区域划分,制定的分区治理对策为2019年草地贪夜蛾防控起到重要作用。周年繁殖区是迁飞过渡区和重点防范区的虫源地,因此,做好周年繁殖区的监测和有效治理对实现草地贪夜蛾分区治理尤为重要,而准确掌握其区域范围和发生规律是做好监测和治理的基础。本研究旨在通过实地广泛调查,弄清草地贪夜蛾冬季在我国发生为害和越冬情况,确定其冬繁区和越冬区,为我国草地贪夜蛾监测预报和分区治理提供重要依据。……
