Study on Population Dynamics of Helicoverpa armigera in Tobacco Fields in Shandong Province Based on Sex Attractant Trapping
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 re-lationships of different types of traps and duration of sexual attractant core with the trapping effect of H.armig-era,and then based on the results,the population dynamics of H.armigera adults in tobacco fields of Shan-dong were analyzed using the sex attractant trapping method.The results showed that in the process of predic-ting the population dynamics of H.armigera,the efficient moth traps with higher trapping rate should be se-lected,and the sex attractant core needed to be replaced every 20 days.The population dynamics of H.armig-era 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.
万方数据
维普
