拉萨青稞蚜虫优势种类及田间发生动态  

Dominant species and population dynamics of highland barley aphids in Lhasa

作　　者：雷雪萍[1] 姚小波[1] 庞博 Lei Xueping;Yao Xiaobo;Pang Bo(Agricultural Research Institute,Tibet Academy of Agriculural and Animal Husbandry Sciences,Lhasa Tibet 850032,China)

机构地区：[1]西藏自治区农牧科学院农业研究所,西藏拉萨850032

出　　处：《中国植保导刊》2021年第11期24-27,共4页China Plant Protection

基　　金：西藏自治区科技计划项目(XZ-2019-NK-NS-001);国家重点研发计划项目(2017YFD0200907);国家重点研发计划政府间国际科技创新合作重点专项(2017YFE0104900)。

摘　　要：为明确拉萨青稞蚜虫优势种群及其年发生动态,在系统调查的基础上,利用优势度指数确定蚜虫的优势种并分析不同优势种群年发生动态。结果表明,麦无网长管蚜、禾谷缢管蚜为拉萨青稞蚜虫的优势种,且不同优势种群年发生量和发生期均有所差异。麦无网长管蚜于6月上旬始见,6月下旬逐渐增多,7月下旬至8月初达高峰期,之后急剧下降。禾谷缢管蚜出现时间较晚,于7月上旬始见,7月中旬数量逐渐增多,8月上旬达到高峰期,之后急剧下降。田间蚜虫混合种群在青稞开花期前具1个明显发生量高峰,应加强田间发生动态监测,在蚜虫发生的始盛期对其进行防治。To determine the dominant aphid species and their annual dynamics in Lhasa farmland,we identified the dominant species by adopting the dominance index and analyzed the population dynamics of different dominant aphid species on highland barley based on field investigation.The results showed that Metopolophium dirhodum and Rhopalosiphum padi were the dominant species,and the density and dynamics of different dominant populations differed.M.dirhodum emerged in early June,and gradually increased in late June,boomed from late July to early August,then decreased.R.padi emerged in early July,one month later than M.dirhodum,gradually increased in late July,peaked at early August,and then decreased.The mixed population presented an obvious peak in the dynamics as the highland barley pre-flowering.It is necessary to strengthen the dynamic monitoring of aphids in the highland barley field and control them before the population boom.

关 键 词：青稞 蚜虫 优势种 发生规律 

分 类 号：S435.123[农业科学—农业昆虫与害虫防治]