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十多年来,我们采用黑光灯、诱蛾器诱测和大田查卵查幼虫的方法获得了大量粘虫虫情资料。通过对1982年以来的虫情及气象资料的整理分析,明确了我县粘虫的发生规律和特点,同时,根据试验示范结果和生产经验教训,总结出了防治技术,为大面积防治提供了科学依据。一、粘虫在我县发生的规律及特点1.生活史:我县地处北纬35°03′～35°28′之间,1月份平均气温-5.5℃,粘虫无法越冬,主要虫源自江淮流域迁飞而来。在本地,粘虫可发生两代,活动于3月中旬至11月上旬,有两个极明显的诱蛾高峰即迁入和迁出高峰(表1)。越冬区成虫从3月下旬至7月下旬陆续迁入,4月中旬前零星迁入的为越冬代
For more than a decade, we have obtained a large amount of data on insect-eating insects by means of black light, decoys, and field investigation of larvae. Through the sorting and analysis of the insect and meteorological data since 1982, the rules and characteristics of armyworm occurrence in our county were clarified. At the same time, based on the experimental demonstration results and production experiences and lessons, the prevention and cure technologies were summarized, providing a Scientific basis. First, the armyworm law and characteristics occurred in my county 1. Life History: My county is located between latitude 35 ° 03 ’~ 35 ° 28’, the average January temperature of -5.5 ° C, the armyworm can not wintering, the main source of insects Since the Yangtze and Huai River migrated from. Two generations of armyworm occur locally, from mid-March to early November, with two highly visible peaks of entomological migrations and migrations (Table 1). Overwintering adult from late March to late July after another into the mid-April sporadic immigrants for the winter