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在不同干旱时期对盆栽“新红星”苹果叶片超氧化物歧化酶（ＳＯＤ）、过氧化物酶（ＰＯＤ）、淀粉酶活性及游离脯氨酸、叶绿素、可溶性糖、可溶性蛋白质和还原糖含量进行测定。结果表明：干旱胁迫初期，ＳＯＤ和ＰＯＤ活性及叶绿素含量升高，以后又逐渐下降，ＳＯＤ比ＰＯＤ对干旱的反应灵敏；游离脯氨酸和可溶性糖含量随干旱时间的延长呈上升趋势，而可溶性蛋白质含量呈下降趋势；淀粉酶活性和还原糖含量在干旱初期增加较多，以后有所下降，但仍高于对照。
The contents of superoxide dismutase (SOD), peroxidase (POD), amylase and free proline, chlorophyll, soluble sugar, soluble protein and reducing sugar in pot leaves of “New Red Star” apple Determination. The results showed that the activity of SOD and POD and the content of chlorophyll increased at the early stage of drought stress and then decreased gradually. SOD was more sensitive to drought than POD. The content of free proline and soluble sugar increased with the prolongation of drought time, but the soluble The protein content showed a decreasing trend. The amylase activity and reducing sugar content increased more during the early drought period and then decreased, but still higher than the control.