前言甜菜象虫为甜菜苗期主要害虫,为害甜菜相当严重,据肇东县调查,1978年实播甜菜面积为155000亩,象虫发生面积为124000亩,毁补种面积77500亩。1979年实播面积170000亩,发生面积为144500亩,毁补种面积为90000亩。1980～1981年甜菜象虫发生更为严重,由于用“3911”闷种,基本上控制了为害。作者于1979～1981年在总 Forebear beetle insects as sugar beet seedling stage pests, harm beet is very serious, according to Zhaodong survey, in 1978 the actual broadcast beet area of ​​155000 acres, the occurrence of elephants 124000 mus, ruined area of ​​7500 acres. In 1979, the actual sowing area was 170,000 mu, with an area of ​​145,400 mu and an area of ​​90,000 mu. As early as 1980-1981 beetle insects occurred more serious, due to “3911” boring species, basically control the damage. The author in 1979 ~ 1981 in the total