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历年来,玉米螟(Ostrinia nubilalis)在内蒙古西部地区的分布为害及其消长规律尚无报导。1969年以前,仅东三盟(呼、哲、昭)有所记载。自1959年以后,本院曾进行调查,玉米螟在西部地区个别地方大麻上为害严重,而玉米田仅零星分布,几乎不造成危害,生产上从未引起重视。但近年来,玉米螟发生为害有扩大蔓延和日趋加重的趋势。作者为进一步探明玉米螟在内蒙西部区(集、二线西)发生趋势及其规律,进而提出相应的防治措施,于1980～1981年在杭锦后旗、达拉特旗、土右旗、土左旗、凉城县等地进行了一系列调查研究工作,现将所获结果报导如下。
Over the years, the distribution of Ostrinia nubilalis in western Inner Mongolia has not been reported yet. Before 1969, only the Third East League (Hu, Zhe, Zhao) was recorded. Since 1959, we conducted a survey in our hospital. Corn borer is seriously devastated by marijuana in some places in the western part of the world. However, there are few sporadic distributions in the corn field, causing almost no harm and no serious attention has been paid in production. However, in recent years, the occurrence and spread of corn borer have become more and more aggravating. In order to further ascertain the trend and the law of the occurrence of corn borer in the Western Inner Mongolia Autonomous Region (set, second line west), and then put forward the corresponding prevention and control measures. From 1980 to 1981, , Liangcheng County and other places conducted a series of investigations and studies, the results will now be reported as follows.