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有关飞虱远距离迁飞过程中的降落问题,国内在飞机网捕的观测中认为:“降雨和下沉气流对飞虱有迫降作用。”在气象分析方面,汪广恒等(1981)认为:“褐稻虱在上空西南气流的运载下向北飞行,途中遇到槽线、切变线、脊线、锋面冷区或雨区时,具备降落条件即下坠地面……。”在南迁的气象条件分析中(1982)认为“……高空有冷平流,有利于褐稻虱下沉迁入”。岸本良—(1972)分析“飞虱大量迁入的气象条件是以锋线的接近或通过时出现,锋带气温急剧下降和降雨等因素成为飞虱
Regarding the problem of landing during long-distance fly-off of planthoppers, the observation by domestic aircraft network catchers that: “rainfall and downdraft have a forced landing effect on planthoppers.” In terms of meteorological analysis, Wang et al. (1981) The brown planthopper flies northward under the load of the southwesterly airstream and encounters a troughline, a shear line, a ridgeline, a frontal cold zone or a rainy area on the way, with landing conditions falling on the ground ... ... “ Condition analysis (1982) that ”... ... high altitude cold advection is conducive to the transfer of brown planthopper subsidence.“ Kishimoto - (1972) analyzed that ”the meteorological conditions in which a large number of planthoppers move in are as follows: the occurrence of planthoppers by approaching or passing frontal lines, the sharp drop in temperature of frontal fringes and rainfall,