【摘要】 依据甜菜夜蛾年发生代数较少,主要依靠幼虫的突发性暴食引发灾害,防治时应选能杀灭当代幼虫的高效农药,盛期用抑太保、米满;盛末期用乐斯本、凯撒、灭多威等农药;小菜蛾年发生代数较多,主要依靠幼虫数量的突发性高涨引发灾害,防治时应选能抑制幼虫的数量增长的持效农药,初期用阿维菌素、BT;盛期用乐斯本等农药。更多还原

【Abstract】 Because spodoptera exigua Hubner occurred less generations a year and damaged seriously by its larva outbreak,it was controlled by spraying high effective pesticides,namely chlorfluazuron or tebufenozide during peak of larvae and chlorpyrifos,tralomethrin or methomyl during84%larvae occur -ring.Because plutella xylostella(L.)occurred more generations a year and damaged seriously by suddenly in creasing the number of larvae,it was controlled by spraying persistent pesticides,namely abamectin or Bt dur ing16%larvae occurring and chlorpyrifos during peak of larvae.更多还原