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生姜叶片的叶绿素含量与光合速率随叶龄的增大而升高，１５ｄ时达到最高峰，随后降低。叶片展开后４０ｄ内ＭＤＡ含量比较稳定，ＳＯＤ活性稍有升高，ＰＯＤ、ＣＡＴ活性急剧上升；此后ＭＤＡ含量明显提高，ＳＯＤ活性开始下降，ＰＯＤ、ＣＡＴ活性虽仍继续升高，但上升幅度减小，说明生姜叶片叶龄达４０ｄ时开始趋于衰老。
The chlorophyll content and photosynthetic rate of ginger leaves increased with the increase of leaf age, reaching the peak at 15 days and then decreased. After 40 days, leaf MDA content was stable, SOD activity slightly increased, POD and CAT activity increased sharply; MDA content increased significantly thereafter, SOD activity began to decline, POD and CAT activity continued to increase, but the increase rate decreased , Indicating that the leaf age of ginger leaves began to age at 40d.