北京郊区桃潜叶蛾成虫消长规律研究

在果园设置糖醋盆、性诱剂对桃潜叶蛾LyonetiaclerkellaL.成虫进行诱集试验,结果表明桃潜叶蛾越冬代成虫对糖醋盆有很强趋性,糖醋盆早于性诱盆14d以上诱集到桃潜叶蛾成虫,并且诱集量大;其余各代成虫在糖醋盆中少见,而性诱盆中诱集虫量较多。通过绘制桃潜叶蛾成虫消长曲线得出,北京郊区桃潜叶蛾1年发生6代,第1代成虫峰期为5月中下旬。3月中旬在果园内设置糖醋盆,能够大量诱杀桃潜叶蛾越冬代成虫,降低发生基数,桃潜叶蛾第1代发生整齐,是药剂防治的有利时期。

The research on rising regulation of Lyonetia clerkella adults in Beijing area

The sugar-vinegar mixture trap and sex pheromone trap were used to attract the Lyonetia clerkella L. adults in the peach orchard in Beijing. Adults of the overwintering generation had strong positive taxis to the sugar-vinegar mixture trap, and the attracted L. clerkella adults were 14 days earlier than in the sex pheromone trap. However, in the following seasons the sex pheromone trap was more effective in attraction, and there were few insects attracted in the sugar-vinegar mixture trap. The observation data showed that the L. clerkella had six generations per year in Beijing area, and the adult population of the first generation reached its climax in mid to late May. In mid March the sugar-vinegar mixture trap is effective in controlling the adults of the overwintering generation, and insecticides can be used for the first generation control because development of the L. clerkella is uniform in this period of time.