及时地提供美国白蛾的生物学特性对防治这种害虫有着重要的意义。为此,我们在克拉斯诺达尔斯克边区对美国白蛾的飞行习性进行了六年观察。越冬蛹羽化的成虫在4月末至5月初出现,其羽化期延续1～1.5个月。在昼夜平均气温不低于18℃时,大批飞行7～10天,在温度为20～28℃时飞行最为活跃,当温度在 The timely provision of the biological characteristics of the American white moth is of great significance for the prevention and control of this pest. For this reason, we conducted a six-year observation on the flight habits of the American white moth in the Krasnodarsk border area. The overwintering pupa eclosion adult appeared in late April to early May, and the eclosion period lasted 1 to 1.5 months. In the day and night the average temperature of not less than 18 ℃, a large number of flight 7 to 10 days, the temperature is 20 ~ 28 ℃ when the flight is the most active, when the temperature at