临沧低热烟区斜纹夜蛾发生规律研究

Occurrence Regularity of Tobacco Cutworm Moth Spodoptera litura in Low-altitude Tobacco Cultivation Areas in Lincang

[目的]探讨临沧市低热烟区斜纹夜蛾(Spodoptera litura Fabricius)发生为害规律。[方法]在自然烟田环境中进行斜纹夜蛾成虫性诱剂监测、田间发生为害调查及自然种群连续世代发育进度观察。[结果]在1 000～1 300 m低海拔的烤烟大田生育期,斜纹夜蛾发生4代,各代历期33 d左右,主害代为第3代。[结论]为低热烟区斜纹夜蛾的综合治理提供了借鉴。

[Objective] The paper was to study the occurrence regularity of tobacco cutworm moth（Spodoptera litura Fabricius） in low-altitude area in Lincang city.[Method] The adult sex attractant monitoring,field investigation of occurrence and damage,and observation of continuous generation development of natural populations were carried out in natural flue-cured tobacco fields.[Result] In field growth period of flue-cured tobacco under low-altitude of 1 000-1 300 m,tobacco cutworm moth occurred for 4 generations,the duration of each generation was about 33 d,and the main injurious generation was the third generation.[Conclusion] The paper provided reference for comprehensive control of tobacco cutworm moth in the low altitude areas.