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进入5月份以来,广西大部分地区出现了明显的降雨过程,十分利于迁飞性害虫的迁入繁殖。据各地调查:稻纵卷叶螟、稻飞虱已在部分稻区迁人为害,其迁入量大,迁入峰相对集中,尤其是稻纵卷叶螟,为近年来所罕见。目前,禾苗生长旺盛,田间小生境利于其繁殖为害。预计稻纵卷叶螟、稻飞虱将呈暴发为害的态势。稻纵卷叶螟分别在5月12～14日、16～20日出现两次迁入高峰,第一次迁入主降区在沿海、桂东南的部分稻区,迁入量桂东南偏少,沿海偏多,亩成虫一般
Since May, significant rainfall has occurred in most parts of Guangxi, which is very beneficial to the migration and reproduction of migratory pests. According to local surveys: rice leaf roller, planthoppers have been relocated in some areas of rice, their immigration, moving into the relative concentration of peaks, especially the rice leaf roller, as rare in recent years. At present, vigorous growth of seedlings, field niche to its breeding harm. Expected rice leaf roller, rice planthopper will be the outbreak of the situation. Cnaphalocrocis medinalis occurred on May 12 ~ 14, 16 ~ 20, respectively, two times to move into the peak, the first move into the main drop in the coastal areas, southeastern part of the rice area, the amount of migrated less than the southeast of Guangxi More coastal, mu adult