稻纵卷叶螟发生规律的研究

• 作 者: 湖南省稻纵卷叶螟科研协作组
• 出 处: 中国农业科学
• 发表日期: 1981年05期
• 关键词: 稻纵卷叶螟 等温线 越冬虫源 北界 蛹羽化 虫态 杂草 迁飞 虫龄 虫量

对于稻纵卷叶螟(Cnaphalocrocis medinalis Guenee)发生规律的研究,过去我们虽然作了大量的工作,但是对其越冬的问题仍无结论。国内曾有资料报道,在1月份平均气温为7℃的等温线以南为该虫的越冬北界;而在此线以北的广大地区,都不能以任何虫态越冬,因此认为虫源由南方迁飞而来。为了探索该虫在我省的发生规律,特别是越冬虫源问题,我们自1972年起与有关单位协作,进行了大量的调查和试验,现总结如下。

For the regular study of Cnaphalocrocis medinalis Guenee, we have done a lot of work in the past, but we still have no conclusion on its overwintering problem. It has been reported in China that the northerly boundary of the worm is south of the isotherm with an average temperature of 7 ° C in January and that it can not overwinter in any of the large areas north of this line. South moved from. In order to explore the law of occurrence of this pest in our province, especially the problem of overwintering pests, we have conducted extensive investigations and experiments in collaboration with the relevant agencies since 1972 and are summarized as follows.