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齐会会,张云慧,蒋春先,武俊杰,孙明阳,杨秀丽,程登发.桂东北稻区第七代褐飞虱迁飞规律及虫源分析.生态学报,2014,34(8):2039~2049 本文二维码信息
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桂东北稻区第七代褐飞虱迁飞规律及虫源分析
Migration of the 7th generation of brown planthopper in northeastern Guangxi Zhuang Autonomous Region, and analysis of source areas
投稿时间:2013-04-01  修订日期:2013-10-15
DOI: 10.5846/stxb201304010578
关键词褐飞虱  迁飞  轨迹分析
Key WordsNilaparvata lugens(Stå  l)  migration  trajectory analysis
基金项目国家自然科学基金(31101431);国家“973”项目(2010CB126200)
作者单位E-mail
齐会会 中国农业科学院植物保护研究所, 植物病虫害生物学国家重点实验室, 北京 100193  
张云慧 中国农业科学院植物保护研究所, 植物病虫害生物学国家重点实验室, 北京 100193  
蒋春先 四川农业大学农学院, 成都 611130  
武俊杰 中国农业科学院植物保护研究所, 植物病虫害生物学国家重点实验室, 北京 100193
四川农业大学农学院, 成都 611130 
 
孙明阳 中国农业科学院植物保护研究所, 植物病虫害生物学国家重点实验室, 北京 100193
四川农业大学农学院, 成都 611130 
 
杨秀丽 山西省农业科学院小麦研究所, 临汾市 041000  
程登发 中国农业科学院植物保护研究所, 植物病虫害生物学国家重点实验室, 北京 100193 dfcheng@ippcaas.cn 
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摘要:
褐飞虱是我国水稻上的一种重要迁飞性害虫,在桂东北稻区不能越冬。近年来,作为次害代的第7代褐飞虱在桂东北稻区频繁暴发,桂东北稻区作为褐飞虱南北往返迁飞的重要通道,研究阐明该稻区第7代褐飞虱的迁飞规律及虫源分布,对第7代褐飞虱的早期预警和有效防控意义重大。利用灯光诱捕的方法研究了2007-2010年桂东北稻区褐飞虱的迁飞动态,并运用大气质点轨迹分析平台HYSPLIT(Hybrid Single-Particle Lagrangian Integrated Trajectory)和气象图形处理软件GrADS(Grid Analysis and Display System)对褐飞虱迁入、迁出峰次进行轨迹分析和气象背景分析。结果表明:(1)桂东北稻区第7代褐飞虱每年都会出现2-3次迁飞高峰,虫量高峰期主要集中在9月底至10月上旬。(2)迁入虫源主要来自江西中西部和湖南中东部稻区,从本地起飞的部分褐飞虱飞行24 h或36 h后能到达广西南部沿海、越南北部和海南等越冬区。(3)925 hPa的温度高则褐飞虱虫量高;盛行东北气流较多的年份,褐飞虱发生严重;微弱的下沉气流和无雨天气有利于褐飞虱的迁飞。
Abstract:
Brown planthopper (BPH), Nilaparvata lugens(Stål), is one of the most important migratory rice pests in China. The northeast of Guangxi Zhuang Autonomous Region, which is not an overwintering area for BPH, is situated in a double-cropping rice region and is near the "Xiang-gui Corridor", the major pathway for the seasonal northward and return migration of BPH in China. In recent years, infestations of the 7th generation of BPH, which is regarded as a secondary devastating generation, have frequently broken out in this region, leading to higher production costs and a serious loss of rice yield for farmers. The migration of BPH to China in spring has increased with the increased backward migration of BPH towards the Indo-China Peninsula during the previous autumn. However, research on the migratory patterns of the 7th generation of BPH is seldom reported. An investigation into the migrating and source areas of this generation has been initiated as a first step towards developing procedures for forecasting and suppressing significant infestations of BPH. Our studies were conducted between 2007 and 2010 in Xing'an county, northeastern Guangxi Zhuang Autonomous Region, with a view to providing reference data for the forecasting and control of BPH. A Jiaduo light trap and a searchlight trap were used to monitor the migratory periods of BPH. The migration process of BPH and the atmospheric conditions during those periods were analyzed with HYSPLIT, a trajectory analysis system, to simulate the migration trajectories of migratory BPH, and also with GrADS software. From this, we ascertained the migration rule of the 7th generation of BPH and their source areas. Furthermore, the relationship between migration of BPH and atmospheric conditions was examined.
There were two or three peak migratory periods for the 7th generation of BPH every year, which generally occurred between late September and early October, in northeastern Guangxi Zhuang Autonomous Region. There are significant differences in immigratory periods, emigratory periods and migratory amount for different years. Most of the immigrant BPH in Xing'an county apparently originated in the mid-west of Jiangxi Province and the mid-east of Hunan Province. Nevertheless, the emigrant BPH from Xing'an county would land mainly in the central part of Guangxi Zhuang Autonomous Region if they flew for 12 h. After 24 h or 36 h of flight, they would land in the south of Guangxi Zhuang Autonomous Region, the north of Vietnam, and on Hainan island which were overwintering areas for BPH. They mainly flew in warm air at about 925 hPa pressure. Our earlier study demonstrated that the critical temperature for flight was a daily average of 20℃. A northeasterly airflow at the 925 hPa pressure level was the major impetus for the return migration of the 7th generation of BPH. They tended to migrate when it was not raining and there was a weak pressure drop. In conclusion, the searchlight trap can trap BPH effectively in any migratory period, so when combined with the Jiaduo light trap, it can help determine the migratory characteristics of BPH. We suggest that plant protection stations use the searchlight trap to monitor and control BPH.
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