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不同浇水处理条件下，对盆栽三年生君迁子、火柿和磨盘柿超氧化物歧化酶（ＳＯＤ），过氧化氢酶（ＣＡＴ）和脂质过氧化作用产物丙二醛（ＭＤＡ）进行测定。结果表明：随着土壤含水量的降低，三幼树组织中的ＳＯＤ活性，ＣＡＴ活性开始呈上升而后下降的趋势；组织ＭＤＡ含量则相反。幼树树种间、器官间和叶片不同发育时期间的两酶活性和ＭＤＡ含量差异显著，分析认为，在土壤干旱时，树种中的ＳＯＤ和ＣＡＴ活性下降，ＭＤＡ含量上升，是组织抗旱机能降低，脂质过氧化作用对细胞伤害加重的结果。
Under different watering conditions, the activities of superoxide dismutase (SOD), catalase (CAT) and lipid peroxidation product malondialdehyde (MDA) Determination. The results showed that with the decrease of soil water content, SOD activity and CAT activity began to increase and then decrease in the three-saplings, and the content of MDA in the tissue was opposite. The results showed that the activities of SOD and CAT decreased and the content of MDA increased in the drought-resistant soil, which was the result of the decrease of the drought resistance of the tissue, Lipid peroxidation results in increased cell injury.