[目的]研究化学信息素控制烟草斜纹夜蛾的田间最适放置密度.[方法]分别按25.8 m×25.8m(15.0个/hm2)、31.6 m×31.6m(22.5 个/hm2)和36.5 m ×36.5 m(30.0个/hm2)各放置16个诱捕器(4行×4排),同时设不低于2 hm2的空白对照,3次重复.[结果]在忽略风向的影响下,随单个诱捕器控制面积的增加,诱蛾量有所增加,但3种不同密度处理间诱蛾量差异不显著;3种放置密度均可有效控制烟田斜纹夜蛾的发生,减少农药使用,保护田间自然天敌,降低防治成本.[结论]北学信息素控制烟草斜纹夜蛾的诱捕器放置密度以31.6 m×31.6m(22.5个/hm2)为宜.%[Objective] To study the most suitable density of chemical pheromone to control Spodoptera litura in tobacco fields. [Method] 16 traps (4 lines×4 rows) were placed as 25.8 m×25.8 m (15.0 trap/hm2) , 31.6 m×31.6m (22.5 trap/hm ) and 36.5 m×36.5 m (30. 0 trap/hm ) , meanwhile a control area more than 2 hm was set up with three repetitions, [ Result] Without taking into account the impact of wind direction, the trap catches increased with the increase of the controlled area of a single trap, but trap catches were not significantly different under the three different density treatments. Under these three densities, the chemical pheromone had effective control to S, li-ture in tobacco fields, reduced the use of pesticides and protected the natural enemies and reduced the control cost. [Conclusion] The suitable density of chemical pheromone traps to control tobacco cutworm moth 5. litura was the specification of 31.6 m×31.6m (22,5 trap/hm ).
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