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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。
In order to study the occurrence of Ephestia elutella (Hübner) in Guanzhong, Shaanxi province from 1998 to 2001, the combination of indoor feeding and sex traps was used to investigate the life history and population dynamics of the tobacco leaf blotch . The results showed that: 1) The tobacco leaf blotch could develop 2-3 generations per year in the Guanzhong area, mainly overwintering in the tobacco silo with mature larvae; 2) The adults began to emerge in late March, with three peaked throughout the year, The overwintering generation, the first generation and the second generation of adults emergence peak in mid May, early August and early September; 3) larvae have three mature migration period, respectively, in April Mid, late July and mid-to late October; 4) The occurrence of overwintering adult adults is affected by the temperature of the storage environment. The larvae’s activities are not only related to the developmental period, but also influenced by human activities. Accordingly, the corresponding prevention and control measures are put forward.