白背飞虱的越冬调查

来源 :福建农学院学报 | 被引量 : 0次 | 上传用户:icerjack
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作者于1974、1982和1983年三个冬季,在福州、闽侯、沙县、宁德、霞浦等地,进行田间白背飞虱越冬调查,得知福建省1月份均温8~10℃左右的地区,白背飞虱以卵越冬。初冬田间可见成虫和个别老龄若虫活动,成虫于12月中旬之前,在再生稻和杂草寄主上产卵,然后成虫逐渐死亡,终见于1月中旬。越冬卵发育缓慢,早春孵化,是第二年田间白背飞虱的初次虫源。 In the winter of 1974, 1982 and 1983, in Fuzhou, Minhou, Shaxian, Ningde, Xiapu and other places, the survey of whitebacked planthoppers overwintering in Fujian Province was conducted. It was found that the average temperature in Fujian Province in January was about 8 ~ 10 ℃ , White-backed plant louse overwintering with eggs. In early winter, adults and individual aged nymphs are visible in the field. Before mid-December, adult worms lay eggs on ratoon rice and weed hosts, and then the adults gradually die and finally find their way into mid-January. Overwintering egg development is slow, early spring hatch, is the second year field whitebacked planthopper primary insect.
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