稻水象甲原产美国,为我国对内对外植物检疫对象。1976年该虫从美国传入日本,开始进入亚洲稻区。1988年传入韩国,同年在我国唐山地区发现,1993年在我省乐清湾沿海稻区发生。该虫具有飞行扩散和对恶劣环境的适应性强、寄主范围广、栖息环境复杂,繁殖力强且具孤雌生殖 Asiatic origin of rice water as the United States, China’s domestic and foreign plant quarantine objects. The worm came to Japan from the United States in 1976 and began to enter the Asian rice area. In 1988, it was introduced into South Korea. In the same year, it was discovered in Tangshan area in our country. In 1993, it occurred in the coastal rice area of ​​Yueqing Bay in our province. The worm has flight spread and adaptability to harsh environments, a wide range of host, habitat complex, fertile and parthenogenesis