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序言近几年来棉铃虫 Heliothis armigera Hub.在河北省的广大棉田中普遍发生,并且有逐年严重的趋势,截止1957年为止,本省中南部棉区发生棉铃虫的县份已有藁城、晋县等38县市目前已成为河北省棉花栽培上的主要问题之一,以1957年南宫县为例棉铃虫棉田一代在27万余亩的棉田里,普遍发生,到七月上旬,棉花蕾铃的被害率达到41%—98%,严重
Preface In recent years, the Heliothis armigera Hub. Generally occurs in vast cotton fields in Hebei Province, and has a serious trend year after year. As of 1957, the cotton bollworm counties in central and southern cotton areas of the province have been established. 38 counties and cities have now become one of the major problems in cotton cultivation in Hebei Province. Taking Nangong County in 1957 as an example, the generation of cotton bollworm cotton fields occurred in more than 270,000 mu of cotton fields. In early July, The rate reached 41% -98%, serious