湖南省棉铃虫发生概况及１９９７年趋势展望王金辉（湖南省植保植检站长沙４１０００５）９０年代初以来，我省各主产棉区棉铃虫发生面积急剧增加，发生程度逐年加重，至１９９５年、１９９６年相继大发生，已成为我省棉花生产的严重障碍。１棉铃虫已成为我省棉区棉花主要... Occurrence Status of Helicoverpa armigera in Hunan Province and Prospect of 1997 Wang Jinhui (Plant Protection and Inspection Station of Hunan Province, Changsha 410005) Since the early 1990s, the occurrence area of ​​cotton bollworm in every main cotton producing area in our province has increased sharply, and the degree of occurrence increased year by year. By 1995, One after another in 1996, has become a serious obstacle to cotton production in our province. 1 cotton bollworm cotton has become the province’s main cotton ...