研究了特效烯提高小麦后期抗低温能力的生理原因。结果表明，外施特效烯通过降低孕穗期植株体内ＧＡ含量和提高其ＡＢＡ含量而增大了ＡＢＡ／ＧＡ，进而增加了到叶的净光合速率，使剑叶和穗中的脯氨酸和可溶性糖含量增多，膜的稳定性增强，电解质渗漏率降低。 The physiological reasons for enhancing the anti-hypothermic ability of the terpenes in the late stage of wheat were studied. The results showed that the external effects of EE increased ABA / GA by decreasing the GA content and increasing the content of ABA in the plants at booting stage, and then increased the net photosynthetic rate to the leaves and the proline and soluble Increased sugar content, membrane stability increased, the electrolyte leakage rate decreased.