多年观察发现，稻蝗若虫各龄发育进度年度间差异较大，一龄若虫盛末即插秧后７～１０ｄ为最佳防治时段，防治最迟时限为６月１５～２０日，防治应集中在田埂及稻田边行３ｍ范围内，防治指标为７８～９０头／ｍ２，常用杀虫剂对稻蝗均有显著防效，但残效短，晚发年或高密度地区需７ｄ后再防第２次。 Years of observation found that the annual development of rice grasshopper nymphs of different age differences between the larger, nymphs of the first instar 7 ~ 10d after transplanting the best control period, the latest prevention and control of time is June 15 to 20, prevention and control should focus on The field control index is 78-90 head / m2 within 3m range of paddy fields and paddy fields. Common insecticides have significant control effects on rice grasshoppers, but the short residual effect, 7d after the late onset or high-density areas, then prevent the second Times.