田间不同波长诱虫灯对草地贪夜蛾和亚洲玉米螟的诱集效果研究

Relative effectiveness of different wavelength trap lamps for Spodoptera frugiperda and Ostrinia furnacalis

【目的】研究不同波长LED灯对草地贪夜蛾Spodoptera frugiperda和亚洲玉米螟Ostrinia furnacalis的诱集效果,为合理高效利用LED诱虫灯提供理论依据。【方法】本研究设置6种不同单一波长的LED灯,研究其对玉米田草地贪夜蛾和亚洲玉米螟的诱集效果,以波长范围在320-420 nm的太阳能LED诱虫灯作为对照,筛选出诱集效果较好的波长,并进一步进行两两组合形成不同复合波长的LED灯,测试其对草地贪夜蛾和亚洲玉米螟的诱集效果。【结果】单一波长LED诱虫灯中,波长365 nm对草地贪夜蛾和亚洲玉米螟的诱集效果均为最好,诱虫量显著高于对照(P<0.05),其次为波长345、355和350 nm的LED灯。复合波长LED诱虫灯中,波长365 nm+350 nm对草地贪夜蛾和亚洲玉米螟的诱集效果最好,其次为波长365 nm+355 nm、355 nm+350 nm和345 nm+355 nm的LED灯。进一步比较单一波长和复合波长诱虫灯的诱虫效果发现,波长365 nm+350 nm的复合波长诱虫灯对草地贪夜蛾和亚洲玉米螟诱集效果显著强于其他单一波长和复合波长的诱虫灯(P<0.05)。【结论】复合波长365 nm+350 nm的LED诱虫灯对草地贪夜蛾和亚洲玉米螟的诱集效果最佳,这为开发高效环保诱虫灯用于害虫绿色防控奠定基础。

[Objectives]To investigate the relative effectiveness of different wavelength LED lights to trap Spodoptera frugiperda and Ostrinia furnacalis,and thereby provide a theoretical basis rationalize and optimize the use of LED insect traps.[Methods]The relative effectiveness of six different single wavelength LED lamps,both individually and combined in pairs,were tested with respect to trapping S.frugiperda and O.furnacalis.Solar-powered LED insect traps with wavelengths in the range of 320-420 nm were used as the control.[Results]The relative effectiveness of the single-wavelengths was 365>345>355>350 nm.Only the 365 nm lights caught significantly more of the targeted pest species than the control(P<0.05).The relative effectiveness of the combined wavelength traps was 365 nm+350 nm>365 nm+355 nm>355 nm+350 nm>345 nm+355 nm.Only the 365 nm+350 nm lights caught significantly more of the targeted pests than the control.Further comparison of the effectiveness of single and compound wavelengths indicates that the wavelengths of 365 nm+350 nm caught significantly more S.frugiperda and O.furnacalis than all other single,or combined,wavelength traps(P<0.05).[Conclusion]LED insect trap lamps with wavelengths of 365 nm+350 nm were the best for trapping S.frugiperda and O,furnacalis.These results lay a foundation for developing efficient and environmentally friendly LED insect traps.