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Chinese Agricultural Science Bulletin ›› 2015, Vol. 31 ›› Issue (14): 126-131.doi: 10.11924/j.issn.1000-6850.casb14110099

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Catastrophic Immigratory Path and Origin of the Brown Planthopper in Xiang-Gui Corridor

Tang Guangtian1, Zou Lixia1, Tan Zongkun2, He Yan2   

  1. (1Guilin City Meteorological Bureau, Guilin Guangxi 541001;2Guangxi Meteorological Disaster Mitigation Institute/Remote Sensing Application and Experiment Station of National Satellite Meteorological Center, Nanning 530022)
  • Received:2014-11-17 Revised:2014-12-24 Accepted:2014-12-26 Online:2015-06-02 Published:2015-06-02

Abstract: The objective of this paper is to provide scientific basis for monitoring and preventing and wiping out of the brown planthopper (BPH) pests by studying migration characteristics of brown planthopper in Xiang-Gui corridor. By using the light trapping data of brown planthopper (Nilaparvata lugens St?l) of 25 years (1990—2014) from three plant protection stations located in Xiang-Gui Corridor, the author selected the peak date of the catastrophic immigratory, then with software HYSPLIT simulation of its backward trajectory, the author conducted fuzzy space clustering analysis based on the case analysis, and studied the main immigratory path and origin of this species in Xiang-Gui Corridor from the aspects of individuality and commonness, respectively. The results indicated that Southward path (southwest, south, southeast) was the main path of the brown planthopper immigrating into Xiang-Gui Corridor in spring and summer season, representing over 91% of the total number of the immigratory path, while northward path was less than 9%. The origin of the insect was mainly from the north of Vietnam and Laos, and followed by Hainan Province and south of Guandong Province. Northeast path was the main path of the brown planthopper immigrating into Xiang-Gui Corridor in autumn. The origin of the insect in Quanzhou station came from Hunan Province and south of Jiangxi Province (accounting for 61%) and north of Jiangxi and south of Hubei Province (accounting for 39%). Besides, the origin of the insect in Yongfu station came from south of Jiangxi Province and north of Guangdong Province, and the others came from much of Hunan Province, north of Jiangxi and south of Hubei, constituting 19% and 81%, respectively. In conclusion, the origin of the insect in Xiang-Gui Corridor mainly came from south of the Indo-China Peninsula and rice producing regions in Hainan Province in summer season, and from north of the Hunan Province and rice producing regions in Jiang Province in autumn season.