草地螟第4个发生周期或将来临  

The fourth occurrence cycle of the beet webworm Loxostege sticticalis may be coming in China

作　　者：江幸福[1] 张蕾[1] 程云霞[1] 姜玉英[2] 刘杰[2] JIANG Xingfu;ZHANG Lei;CHENG Yunxia;JIANG Yuying;LIU Jie(State Key Laboratory for Biology of Plant Diseases and Insect Pests,Institute of Plant Protection,Chinese Academy of Agricultural Sciences,Beijing 100193,China;National Agro-Tech Extension and Service Center,Beijing 100125,China)

机构地区：[1]植物病虫害生物学国家重点实验室,中国农业科学院植物保护研究所,北京100193 [2]全国农业技术推广服务中心,北京100125

出　　处：《植物保护》2019年第4期79-81,共3页Plant Protection

基　　金：国家自然科学基金(31672019,31871951);国家绿肥产业技术体系(CARS-22);国家重点研发计划(2017YFD0201701,2017YFD0201802);北京市自然科学基金(6172030)

摘　　要：草地螟是我国北方地区重要的农牧业害虫,新中国成立后曾3次周期性大发生。其中第3个周期发生于1995年-2010年,2010年后我国草地螟种群数量急剧下降。2010年-2013年,连续4年发生为害面积下降到2008年的5%左右。然而,2018年草地螟在内蒙古兴安盟监测站出现短期迁入虫源高峰,2019年越冬虫源数量有增长趋势。根据草地螟周期性发生规律、太阳黑子活动周期以及田间种群动态监测结果,结合近年来我国北方地区农作物结构调整以及境外虫源的迁入等因素,综合分析显示,目前我国草地螟第4个发生周期或将来临。The beet webworm,Loxostege sticticalis,is one of the most destructive pests of agriculture and livestock forage in northern China.It has occurred three times periodically since the foundation of the People’s Republic of China.The third cycle occurred from 1995 to 2010.After 2010,the population size of the beet webworm in China decreased sharply.During 2010 to 2013,the area of crop damage by this insect species in China decreased to about 5%of that in 2008.However,in 2018,a short-term peak of the immigrated source population of the beet webworm appeared at the Monitoring Station of Xing’an League in Inner Mongolia,and an increasing trend of the overwintering population size of this insect was also observed in 2019.On the basis of comprehensive analyses of the regularity of periodic occurrence and the cycle of sunspot activities and monitoring results of field population dynamics of the beet webworm,combined with the adjustment of crop structure in northern China and the immigration of overseas insect sources in recent years,we predicted that the fourth occurrence period of the beet webworm in China may be coming presently.

关 键 词：草地螟 周期性发生 太阳黑子 田间种群动态 结构调整 境外虫源 

分 类 号：S433.4[农业科学—农业昆虫与害虫防治]