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研究表明,浙江省双季稻区稻水象甲二代虫量低的首要原因是绝大部分一代成虫迁出早稻田夏蛰并越冬,构成二代虫源的比例极微。早稻田内的一代成虫在晚稻插秧前一直外迁,田埂上的个体则几乎全部迁出(插秧后仍继续外迁),仅晚稻插秧时尚未迁走的田内成虫(仅占早稻收割前残留一代虫量的5％～8％)和迁出后落入晚稻秧田的少量个体不再迁飞而转入正常的取食产卵,最终构成晚稻二代虫源。文中讨论了双季稻区稻水象甲生活史对策的适应意义。
The research shows that the primary reason for the low birth weight of the rice water weevil 2 in the double cropping rice region of Zhejiang Province is that most of the migrating adults migrated out of the winter hibernates of Waseda and overwintered, making up a very small proportion of second-generation insect sources. The first generation of adults in Waseda had been relocated before the rice was transplanted. The individuals on the Horseshoe crab were almost all moved out (after the transplanting.), Only adults in the field that had not been removed during the transplanting of late rice The amount of 5% to 8%) and a small number of individuals who moved into the late rice seedling after they moved out migrated to normal feeding and spawning, eventually forming the second generation of rice in late rice. The article discusses the adaptive significance of the strategy of rice water weevil life cycle in double cropping rice area.