不同性诱剂与诱捕器对棉铃虫和烟青虫诱杀效果研究

Study on Trapping Effects of Different Kinds of Sex Pheromones and Traps to Helicoverpa armigera and Helicoverpa assulta

为了明确不同性诱剂与诱捕器对棉铃虫和烟青虫的诱杀效果,本研究选择了2个厂家的4种诱芯以及3种诱捕器进行相关试验,评价了不同诱芯、不同诱捕器的诱捕效果和性诱剂的防治效果,并提出了性诱捕器的最佳安放时间.结果可知,2个厂家的棉铃虫与烟青虫诱芯在诱蛾效果上并无显著差异;3种诱捕器的诱虫效果从高到低依次为三角形塑料诱捕器、船型塑料诱捕器、夜蛾类通用型诱捕器,结合性价比,建议选择耐用高效的船型塑料诱捕器.本研究还连续监测了烟青虫诱芯在不同时间段的诱捕效果,发现在贵州省遵义市辣椒产区,7月中下旬是烟青虫成虫发生的高峰期,建议以此时间作为防治辣椒烟青虫危害的关键时期.此外,通过对烟青虫性诱剂的防治效果进行比较,与对照区相比,辣椒受害果数减少了13.4%,防治效果达61.19%.本研究为采用性诱剂防治田间棉铃虫与烟青虫提供了一定参考.

In order to clarify the trapping efficacy of different sex pheromones and traps on Helicoverpa armigera and Helicoverpa assulta,four lures and three traps from two manufacturers were selected to research.The effect of different lures and different traps,the best placement time of sex attractants,and control effects of sex attractants,were evaluated.The results showed that there was no significant difference in the moth-trapping effect of the traps between the two manufacturers and that the trapping effects of the three traps were as follows:triangular plastic traps>boat-shaped plastic traps>noctuid traps.Taking into consideration both the performance of a product and its price,it is recommended to choose the boat-shaped plastic trap.Continuously monitoring the trapping effect of lures for H.assulta at different time periods revealed that middle and late July was a peak period for the adult H.assultain in the pepper production area of Zunyi.It is,therefore,recommended that this time be used as the critical period for preventing and controlling the damage of pepper caused by H.assulta.In addition,by comparing the control effect of the sex pheromone,it was found that the number of damaged pepper fruit in the treatment area was reduced by 13.4%compared with the control area,and the control effect reached 61.03%.