通过对2010年10号台风莫兰蒂(Meranti)进行流场分析和过程分析,阐明了此次台风对浙江稻区9月上中旬褐飞虱Nilaparvata Lugens(Stl)的迁飞造成的影响。结果表明:(1)台风过境前,其外围前方的强东南气流及高空下沉气流为褐飞虱提供了运载工具和降落条件,虫源基本来自浙江东南部和迁入区附近区域;(2)台风过境时,由于天气恶劣,部分站点上灯虫量很小,但金华和遂昌处于台风眼范围内,天气较好,风速较小,为之前随大风和降雨迁入的大量虫群提供上灯的机会,造成上灯高峰,虫源地主要来自浙江省南部;(3)台风过境后,受台风后部西南风和降雨影响,福建中北部和南部有褐飞虱随降雨迁入浙江稻区,但虫量较小。(4)根据浙江为东部临海的地理位置和台风的气旋式辐合流场的特点,从本研究结果看,莫兰蒂台风的影响仅为中小尺度范围。 The impact of the typhoon on the flight of Nilaparvata Lugens (Stl) in the middle and upper reaches of September in mid-August in Zhejiang province was clarified through the flow field analysis and process analysis of 2010 Meranti typhoon 10. The results showed as follows: (1) Before the typhoon crossed the strong southeastern airstream and the high-altitude downdraft in front of its outer periphery provided the means of delivery and landing conditions for the BPH. The source of the insects mainly came from the southeastern Zhejiang and the area near the immigration area; (2) Due to the bad weather at some stations during transit, the number of light insects on the site was very small. However, Jinhua and Suichang were within the range of typhoon eye, and the weather was better and the wind speed was smaller, providing light to a large number of swarms swarming with winds and rainfall (3) After the typhoon crossed the border, due to the southwesterly winds and rainfall in the back of the typhoon, brown planthopper in central and northern Fujian and southern China moved into the Zhejiang rice paddy with rainfall, but the main source of the light came from southern Zhejiang. Small amount of insects. (4) According to Zhejiang’s geographical location of the eastern coastal sea and the characteristics of the cyclonic convergence flow field of the typhoon, from the results of this study, the impact of the Typhoon Morandi is only in the middle and small scales.