枸杞园斜纹夜蛾的发生规律与防治技术初步研究

Preliminary studies on the occurren ce of Spodoptera litura in Chinese wolfberry orchard and its control techniques

斜纹夜蛾在江永县枸杞园1a发生6代,以第四代8月中旬至9月中旬为害最重。成虫飞翔力强,有趋光性,频振式杀虫灯对其具有很强的诱杀效果。杀虫灯区该虫的田间落卵量和幼虫量分别比非灯区降低53.8%和68.4%。频振式杀虫灯是枸杞园斜纹夜蛾无公害治理中1项先进、实用的物理防治措施。

There were six generations of Spodoptera litura in a year in Chinese wolfberry orchard of Jiangyong Coun-ty and the most serious damage took pl ace during the middle of August to the middle of September.The moth had phototaxis and strong ability of flight.The method of trapping and killing the moths with frequency-vibrancy moth-killing lamp was very effectiv e.As compared with the amounts of eggs and larvae in the field without lamp s,the amounts of those in the field where the lamps were placed reduced by 53.8%and 68.4%respectively.The ap-plication of frequency-vibrancy mo th-killing lamp was one advanced and useful physical measure in the non-pollution control of Spodoptera litura in Chinese wolfberry orchard.