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近年来,福建省白背飞虱Sogatella furcifera(Horváth)危害严重,尤其2007年,全省早稻白背飞虱特大发生,迁入峰不但比常年偏早,且虫量异常偏多。本文利用由美国国家大气与海洋局与澳大利亚国家气象局共同开发研制的大气质点轨迹分析平台模型HYSPLIT,和气象图形分析显示软件GrADS对2007-2010年4-5月福建省白背飞虱早期主要迁入峰次进行了轨迹模拟,并对2007年5月份的主要迁入过程进行了天气学背景分析。结果显示:(1)福建省白背飞虱早期迁入虫源主要来自广东、海南省,台湾省、菲律宾仅在个别年份提供少量虫源,非主要虫源地;(2)低空急流与持续降水的配合是导致2007年白背飞虱集中降落的直接原因。2007年5月稻飞虱迁入同期,福建850hPa上空低空急流频繁,5月份西太平洋副高比往年偏西、偏强,且北跳推迟,使得华南地面准静止锋形成,雨季延长;(3)2007年广东、海南3月底至4月初的1代成虫迁入种群较多造成的田间2代白背飞虱虫源基数的增加是造成2007年福建白背飞虱迁入量增加的最根本原因。福建白背飞虱的主迁入虫量取决于两广早期田间虫源基数的多寡,在副高偏强、雨水较多年份,提前对两广、海南地区田间稻飞虱发生情况进行了解将有助于福建稻飞虱的预防与治理。
In recent years, Sogatella furcifera (Horváth) of white-backed planthoppers in Fujian province has a serious harm. Especially in 2007, the white-backed planthopper Squalethodorphax striatellus in the province was extremely large. The migrating peak was not only earlier than usual, but also anomalously large. In this paper, we use HYSPLIT, a model of atmospheric particle trajectory analysis platform jointly developed by the National Oceanic and Atmospheric Administration of the United States and the Australian National Meteorological Administration, and the weather graph analysis shows that the software GrADS is sensitive to the early stage of whitebacked planthopper in Fujian Province from April to May in 2007-2010. Mainly moved into the peak of the trajectory simulation, and in May 2007 the main move into the process of weather analysis of the background. The results showed that: (1) The main source of white -backed planthopper migration in Fujian Province came from Guangdong, Hainan Province and Taiwan Province in the early period. The Philippines provided only a few insects and non-main source of insects in individual years; (2) Precipitation cooperation is the direct cause of concentrated drop of whitebacked planthopper in 2007. In May 2007, planthopper migrated to the same period. Fujian low-level jet stream over 850hPa was frequent. In May, the western Pacific subtropical high was stronger than normal in previous years and the northward jump was delayed. This led to the formation of the quasi-stationary front in the southern China and the prolonged rainy season. ) 2007 Guangdong, Hainan In late March to early April, the larger population of first-generation adult immigrants in the field resulted in the increase of the second generation BPH population base in 2007 and the most significant increase the reason. The main migration amount of white-backed planthoppers in Fujian depends on the number of insect-derived baselines in the early days of Guangdong and Guangxi. Understanding the occurrence of rice planthoppers in the fields of Guangdong, Guangxi and Hainan in advance, Prevention and Control of Rice Planthoppers in Fujian Province.