摘要： 草地螟在我国表现为长周期的间歇猖獗，主要发生于北纬37°以北，由东经108°至118°，斜向东北至北纬50°的地区。北纬39°～43°与东经110°～116°之间为主要越冬区，其它为扩散发生区。根据滞育与光照和温度的关系，阐明了主要越冬区形成大量滞育越冬种群的机制。雷达观测证实了草地螟的迁飞现象。主要越冬区秋季世代形成大量越冬种群，春季成虫迁飞构成大范围发生的虫源，扩散发生区春季迁入的成虫峰期、蛾量与主要越冬区相近，一代幼虫危害后虫量骤减，幼虫仅形成少量越冬种群。
关键词:
草地螟,
迁飞,
滞育,
生活史
Abstract: Meadow moth <Loxostege stictialis L.runs intermittently wild with long periodicity in Chian.Their life history and distribution consisting of migration and diapause were given on the basis of some studies, experiments and field investigation.They occurs on northeastern slant from latitude 37°N to 50°N and from longetude 108′E to 118°E.A main overwintering area is located between latitude 39°N to 43°N and longitude 110°E to 116°E.Where the last generation larvae in autumn formed large population of diapause of overwintering, then the adults in spring migrate and become the source of outbreak over north and northeast China.All of distribution areas out of the main overwintering area are called dispersing areas, where the larvae in autumn are very less and overwintering population is small even though during the abundant period.The natural condition of diapause for overwintering in the main overwintering area has been expounded.The observation by radar has proved that the masses of moth migrated downwind.
Key words:
Meadow moth Loxostege sticticalis L.,
Migration,
Diapause,
life-history
中图分类号:
孙雅杰, 陈瑞鹿. 草地螟迁飞、发生区与生活史的研究[J]. 华北农学报, 1995, 10(4): 86-91. doi: 10.3321/j.issn:1000-7091.1995.04.016.
Sun Yajie, Chen Ruilu. Migration, Occurrent Region and Life-History of Meadow Moth Loxostege sticticalis L. in China[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1995, 10(4): 86-91. doi: 10.3321/j.issn:1000-7091.1995.04.016.