通过GC-MS顶空进样的方法测定油松、落叶松、马尾松和黄山松树皮的挥发性物质,显示α-蒎烯和β-蒎烯是树皮的挥发性物质中的主要成份;单一树皮饲喂证实红脂大小蠹对4种树皮均能钻蛀取食;嗅觉行为实验和取食趋向实验比较红脂大小蠹对4种针叶树树皮的行为趋向,结果表明4种树皮间存在差异性:对油松的选择趋向性最为明显;其次是落叶松;对马尾松和黄山松的趋向性较弱。4种松树树皮的挥发性成份的分析结果与红脂大小蠹对其的选择趋向性间相关性不明显。 The volatile compounds of Pinus tabulaeformis, Larix gmelinii, Pinus massoniana and Pinus taiwanensis pine bark were determined by GC-MS headspace sampling. The results showed that α-pinene and β-pinene were the main components in the volatile components of bark. Single tree bark feeding confirmed that Beauveria bassiana was able to drill and feed on the four barks. The olfactory behavior test and feeding tended to compare the behavior tendency of Beauveria bivalvia on the four conifer barks. The results showed that four trees Differences between the skin: the most obvious choice of the direction of Pinus tabulaeformis; followed by the larch; the tendency of Pinus massoniana and Pinus taiwanensis is weak. The results of the analysis of the volatile components of the 4 kinds of pine barks showed no obvious correlation with their selection tendency.