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分析了球果花蝇（Ｓｔｒｏｂｉｌｏｍｙｉａｓｐｐ）的危害与落叶松挥发性物质的组成、变化的关系。落叶松球果与枝叶的挥发性物质主要为萜烯类，其中以α蒎烯、β罗勒烯、β蒎烯、月桂烯、３蒈烯、水芹烯为主。球果挥发性物质中各组分的相对含量与枝叶的不同。在不同的发育阶段球果挥发性物质中各组分的相对含量变化较大，在发育初期，无绝对优势组分；在发育中期，以上述６种烯类为优势组分。被害球果挥发性物质中６种主要组分的相对含量明显高于未受害球果。不同无性系或同一无性系不同植株之间挥发性物质的百分组成不同，球果的被害率亦不同。在月桂烯、水芹烯相对含量都较高时，球果被害率低，反之球果被害率高；在β蒎烯、月桂烯、３蒈烯和水芹烯相对含量都较高时，球果被害率最低。在枝叶的挥发性物质中，６种主要组分相对含量很低时，球果被害率低；随着β蒎烯、３蒈烯相对含量的增加，球果被害率增高。
The relationship between the damage of Strobilomyas sp. And the composition and variation of larch volatile substances was analyzed. Larix cones and foliage volatile substances mainly terpenes, of which α-pinene, β-carnolene, β-pinene, myrcene, 3 acenaphthylene, phellandrene based. The relative content of each component in the volatile substances of the cones is different from that of the branches and leaves. At different stages of development, the relative content of each component of coniferous volatiles changed greatly. In the early stage of development, there was no absolute dominant component. In the middle stage of development, the above six kinds of alkenes were the dominant components. The relative content of the six main components in the volatiles of dredged cones was significantly higher than that of the non-congested ones. Different clones or different plants of the same clones of different volatile components of different percentages, the condemnation rate is also different. When the relative contents of myrcene and phellandrene were high, the damage rate of cones was low and the condemnation rate of cones was high, while the relative content of β-pinene, myrcene, 3-carene and phellandrene was high , Cones the lowest damage rate. In the volatile compounds of leaves and leaves, the relative damage of the six main components was low, and the damage rate of cones was low. The damage rate of cones increased with the relative content of β-pinene and 3-carene.