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二年生杜种实生苗在不同土壤干旱条件下的盆栽试验结果表明，杜仲对土壤水分胁迫有很强的适应能力．这种适应能力通过三种调节过程实现，即通过叶片水分饱和亏缺和Ｋ＋含量的反馈控制实现的气孔运动的调节；通过脯氨酸积累实现的渗透调节，以及通过活性氧清除剂（如过氧化物酶）活性变化实现的对自由基平衡的调节．
The results of pot experiment on seedlings of two-year-old seedlings in different soil drought conditions show that Eucommia ulmoides has strong adaptability to soil water stress. This adaptability is achieved through three regulatory processes, namely the regulation of stomatal movements through feedback control of leaf water saturation and K+ content; osmotic adjustment through proline accumulation, and through active oxygen scavengers (such as The change in the activity of the oxide oxidase) regulates the balance of free radicals.