利用气相色谱仪对不同环境条件下的胡麻品种进行脂肪酸组分分析，研究环境因子对胡麻籽中脂肪酸组分、产量及含油率的影响。结果表明，随着各环境因子指标的增长或提高，各脂肪酸质量分数趋势各不相同。其中棕榈酸和硬脂酸质量分数变化不大；亚油酸的变化比较平缓，升降幅度不大；油酸和亚麻酸质量分数趋势基本相反，呈负相关，但相关系数不显著。海拔与所有胡麻品种含油率均呈负相关，说明海拔对含油率有抑制作用；年降水量与含油率除均呈正相关，说明年降水量对含油率有一定的促进作用。

Fatty acid components of flax species under different environmental conditions were analyzed with gas chromatograph， the effects of environmental factors on fatty acid composition，yield and oil yield of flaxseed were studied. The results showed that the trends of fatty acid content were different with the increase of each of environmental factors. The contents of palmitic acid and stearic acid did not change much； the change of linoleic acid was slow and the fluctuation was not significant； the trends of oleic acid and linoleic acid content were negative， but the correlation coefficient was not significant. The altitude has a negative correlation with the oil content of all kinds of flax varieties， which indicates that the altitude can inhibit the oil content； and the annual precipitation is positively correlated with the oil content， which indicates that the annual precipitation can promote the oil content.

S563.2

国家胡麻产业技术体系(CARS-17-GW-02)。