玉米生长初期,易受叩头虫幼虫的危害。1968年春木、手塚曾报导北海道石狩的玉米受菖蒲蛮夜蛾的危害,1975年以又报导了北海道各地玉米生长初期受鳞翅目幼虫的危害。在道东十胜旱作地区,调查了玉米生育初期危害害虫的种类、受害状态等,得知主要危害种为菖蒲蛮夜蛾及菖蒲灰夜蛾,现将其生态介绍如下。 Early corn growth, vulnerable to beetle larvae harm. In spring 1968, Tezuka once reported that corn from Hokkaido Ishikari was harmed by Acorus calamus. In 1975, it was further reported that the growth of corn in all parts of Hokkaido was endangered by Lepidoptera larvae. In the area of ​​Dadusheng dry land in Dong-dao, the types of pests, the status of the victims and the like in the early stage of maize growth were investigated. The main harmed species, Acorus calamus and Acorus calamus, were summarized as follows.