Seasonal history and population dynamics of Ephestia elutella were investigated with indoor rearing and sex pheromone trap monitoring in in central Shaanxi from 1998 to 2001. Results showed that E. elutella completed 2 or 3 generations per year, overwintering as grown larvae in tobacco warehouses. Overwintered adults emerged at the end of March, and the adults in the overwintered, 1st and 2nd generations reached flight peak in mid-May, early August and early September, respectively. E. elutella also had three pupating peaks in mid-late April, early July and mid-late October. In addition, the emergence date of overwintered-generation adult depended on environmental temperature, while larval behavior was related to developmental stage and management activities in warehouse, Control method was suggested according to seasonal life history and pest habits.%为研究烟草粉斑螟Ephestia elutella (Hübner)在陕西关中的发生规律,于1998-2001年采用室内饲养与性诱捕器监测相结合的方法,持续调查了烟草粉斑螟年生活史和种群数量动态.结果表明:1)烟草粉斑螟在关中地区1年可发生2-3代,主要以老熟幼虫在烟仓中越冬;2)成虫3月下旬开始羽化,全年有3个发生高峰期,越冬代、第1代和第2代成虫的羽化高峰期分别出现在5月中旬、8月上旬和9月上旬;3)老熟幼虫有3个明显的迁移活动期,分别出现在4月上中旬、7月上旬和10月中下旬;4)越冬代成虫的发生期受贮藏环境温度的影响,幼虫的活动规律则不仅与发育期有关,还受人为活动的影响.据此提出了相应的防治措施.
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