基于性诱剂监测山东烟田棉铃虫种群消长动态研究

Study on Population Dynamics of Helicoverpa armigera in Tobacco Fields in Shandong Province Based on Sex Attractant Trapping

为明确山东烟田棉铃虫发生情况,提高烟田棉铃虫防控效率,本试验开展不同类型诱捕器和性诱芯持续时间与棉铃虫诱集效果之间关系的研究,同时基于所得结果利用性诱剂诱捕法测定山东烟田棉铃虫成虫种群动态。结果显示,棉铃虫种群动态测报中应选用诱蛾率更高的蛾类高效诱捕器,性诱芯需要20 d左右更换一次;山东烟田棉铃虫成虫种群消长动态呈双峰型曲线,第一个高峰出现在6月中旬至下旬,第二个高峰期出现在7月下旬至8月上旬,第一个高峰明显高于第二个高峰,同时棉铃虫成虫主要在夜间活动。该结论可为明确新型栽培模式下山东烟田棉铃虫种群动态提供理论依据,同时可为当前山东烟田棉铃虫的精准防控提供技术指导。

In order to clarify the occurrence status and improve the field prevention and control efficiency of Helicoverpa armigera in tobacco fields in Shandong Province,this experiment was conducted to study the relationships of different types of traps and duration of sexual attractant core with the trapping effect of H.armigera,and then based on the results,the population dynamics of H.armigera adults in tobacco fields of Shandong were analyzed using the sex attractant trapping method.The results showed that in the process of predicting the population dynamics of H.armigera,the efficient moth traps with higher trapping rate should be selected,and the sex attractant core needed to be replaced every 20 days.The population dynamics of H.armigera adults in Shandong tobacco fields showed a bimodal curve.The first peak appeared in middle June to late June,and the second peak appeared in late July to early August.The first peak was obviously higher than the second peak.Nevertheless,the adult H.armigera was mainly active at night.These results could provide a theoretical basis for clarifying the population dynamics of H.armigera in Shandong tobacco fields under the new cultivation mode,and also provide theoretical guidance for its precise prevention and control.