利用灯光监测草地螟在吉林省的发生动态

Study on Population Dynamics of Loxostege sticticalis Using Light Traps in Jilin Province

摘要:

草地螟（Loxostege sticticalis L.）是吉林省重要的农业害虫，具有迁飞性、多食性等特性。明确草地螟在吉林省的发生动态，可为草地螟的间歇性暴发预警提供科学依据。本研究在吉林省3个代表性区域（公主岭、梅河口、洮南）应用虫情测报灯，逐日统计、分析草地螟成虫的种群动态。结果表明，草地螟最早始见于5月16日，终见于9月16日。5—9月是成虫发生时期，高峰期是6、7月，监测到多个虫量突增日。各监测点诱虫量比较结果为：洮南>公主岭>梅河口。各月诱虫量比较结果为：6月>7月>8月>5月>9月。洮南监测点诱虫量多，梅河口监测点诱虫量稀少，不同年度各地发生量未见一致性，这可能与草地螟越冬、虫源组成及迁飞路径有关。本研究结果可为吉林省草地螟的监测预警及综合管理提供基础理论依据。

Abstract:

Loxostege sticticalis, commonly known as the meadow moth, is a significant agricultural pest in Jilin Province, which is also a serious polyphagous migrant pest. Monitoring population dynamics of the meadow moth in Jilin Province is important for forecasting outbreaks of the pest. Occurrence regularity was investigated based on pest forecast light traps in three monitoring sites including Gongzhuling, Meihekou and Taonan in Jilin Province. The results showed the occurrence early period and late date were 16 May and 16 September. The moth occurred from May to September, with a peak number from June to July. There were many captured dates of suddenly increase. The captured number for sites: Taonan>Gongzhuling>Meihekou. The captured number for months was June>July>August>May>September. Taonan had the highest capture numbers, while Meihekou had the lowest. No consistency was found in captured number, which probably was caused by overwintering, population source and migratory trajectory. These findings provide a scientific basis for effective monitoring and control for the pest in the region.