杨树是速生用材树种。我县南山、北山、川水地区均有天然分布和人工栽培,已成为四旁绿化和成片造林的主要树种之一。但是,近年来铁路、公路沿线和文峰、宝凤、城关等社队成片杨树严重死亡,降低了木材使用价值。经调查,我县杨树死亡原因主要是毁灭性的树干害虫——黄斑星天牛危害造成的。近年来,我们对该虫发生、为害及防治进行了研究,现将初步结果报道如下,以供参考。 Poplar is a fast-growing timber species. Nanshan, Beishan and Chuanshui areas in our county have natural distribution and artificial cultivation, and have become one of the main tree species afforesting and reforestation on the four sides. However, in recent years, railways, highways and other commune units such as Wenfeng, Baofeng and Chengguan have become serious poplar trees and have reduced their use value. After investigation, the cause of the death of poplar in our county is mainly caused by the devastating trunk pests, the yellow star aspen. In recent years, we conducted a study on the occurrence, damage and prevention of the insects. The preliminary results are reported as follows for reference.