落叶松八齿小蠹聚集信息素的时空诱集效果

Spatiotemporal attractive effect of aggregation pheromone of Ips subelongatus

应用落叶松八齿小蠹聚集信息素对内蒙古阿尔山林区落叶松八齿小蠹的年扬飞规律、日扬飞规律、林缘外不同距离以及林内不同高度诱捕器诱集效果等进行了试验。结果表明:落叶松八齿小蠹的成虫发生期从5月中旬开始,到8月底结束,期间有两次明显的扬飞高峰期;成虫活动主要集中在12:00—16:00;聚集信息素对落叶松八齿小蠹的有效引诱距离为200 m左右,在90 m以内引诱效果最佳;林内树干1.5 m处为最佳的诱捕器设置高度。

Emergence regularity of Ips subelongatus Motschulsky and attractive effect of traps at different distances outside the forest and different hanging heights in the forest were studied with aggregation pheromone of Ips subelongatus in A＇ershan area,Inner Mongolia.The results showed the adult emerged from mid May to the end of August with two peaks.Its active time was between 12：00 and 16：00 when the temperature was relative high in a day.The effective attractive distance of I.subelongatus pheromone was about 200 m and the optimum distance was within 90 m.The best hanging height of the traps was about 1.5 m on trunk.