采用系统调查、人工饲养等方法研究分析了河南棉区越冬代棉铃虫的虫源性质 ,结果表明 :长期以来 ,河南棉铃虫以当地虫源为主 ,地方发生规律明显。多数年份的越冬代成虫包含有少量外来虫源 ,但是 ,其发生早 ,在当地基本不能产卵 ,亦无幼虫生存 ,对当年第一、二代的发生无明显影响。河南北中部棉区是棉铃虫集中发生区。上述结论对建立河南省独立的棉铃虫中期预测预报体系和灾变预警系统有较大的意义和作用 The systematic investigation and artificial feeding were used to study and analyze the pest origin of overwintering cotton bollworm (Helicoverpa armigera) in Henan cotton area. The results showed that the main insect source was Helicoverpa armigera in Henan Province, and the local occurrence was obvious. In most years, the overwintering adult adults contained a small amount of external insect sources, however, they occurred early, basically unable to lay eggs in the local area, and larvae survived without any significant impact on the occurrence of the first and second generation of the year. Central cotton in northern central area is the area where cotton bollworm occurs. The above conclusions have great significance and effect on the establishment of an independent bollworm mid-term forecasting system and catastrophe early warning system in Henan Province