Abstract: Loxostege sticticalis was one of the main migration agricultural pests in North of China. Its migration path which affected by meteorological conditions was very important to accurately forecast. The relationship between meteorological conditions of over winter imago migration and the results of Loxostege sticticalis mark, release and capture was analyzed by experimented in Inner Mongolia plant protection station. The results showed that the migration of Loxostege sticticalis appeared with cold front, the updraft in front of surface cold front and southeast warm moist air with 850hPa upper level were the main circulation background. The low level air, suitable temperature and upward vertical movement were benefit to the migration of Loxostege sticticalis.It was easy to capture the Loxostege sticticalis when a large range and plentiful precipitation caused the strong north western downdraft occurred in the recovery area. The results are significant to understand Loxostege sticticalis migration habit and meteorological conditions, and make early warning.

Key words: Loxostege sticticalis, Release experiment, Flying off, Landing, Airflow, Air temperature