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1996～1997年华北地区一代棉铃虫(Helicoverpa armigera (H(?)bner))成虫发生期间,乘客轮在渤海考察了棉铃虫的迁飞动态。在距海岸线20～80km处发现大量的棉铃虫、粘虫和龟纹瓢虫等昆虫向辽宁方向迁飞。对棉铃虫迁飞行为的观察结果表明,棉铃虫成虫于傍晚19:30左右起飞,凌晨4:00～5:00降落,共计在空中大约飞行8.5～9.5h。捕获的棉铃虫雌成虫卵巢发育1级占96％、2级占4％,交配率4％,具有迁飞昆虫的典型生理特征。
During the period from 1996 to 1997, the first generation of Helicoverpa armigera (H (?) Bner) adult in North China was investigated by the passenger vessel in the Bohai Sea. A large number of insects such as cotton bollworm, armyworm and turtle ladybug were found migrating to Liaoning from 20 to 80km away from the coastline. Observations on the migration of cotton bollworm showed that adult cotton bollworms took off at about 19:30 in the evening and landed at 4:00 am to 5:00 am in the air and were about 8.5-9.5 hours in flight. The female adults of H. armigera captured 96% of ovaries, 4% of grade 2 and 4% of mating rate, and had the typical physiological characteristics of migrating insects.