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应用压力室法和压力与容积相关曲线技术，测定和分析了山杏、山桃、山合欢、黄连木、君迁子、石榴的盆栽苗木在不同土壤水分胁迫条件下的有关水分参数的变化。结果表明，苗木叶水势与蒸腾速率呈指数关系（Ｙ＝ＡｅＢＸ），与土壤含水量呈双曲线关系（Ｙ＝Ａ＋Ｂ／Ｘ）。各水分参数都与苗木保持膨压能力有关。６个供试树种中，君迁子和山杏保持膨压的能力较强，石榴和山桃次之，山合欢和黄连木较弱
By using pressure chamber method and pressure-volume curve, the changes of water-related parameters of potted seedlings of Prunus armeniaca, Prunus armeniaca, Acacia, Pistacia chinensis, Pistacia chinensis and Pomegranate under different soil water stress were measured and analyzed. The results showed that the leaf water potential and the transpiration rate of seedlings showed an exponential relationship (Y = AeBX), and the soil moisture showed a hyperbolic relationship (Y = A + B / X). The moisture parameters are related to the ability of seedlings to maintain turgor pressure. Among the six tested species, Junruzi and Prunus armeniaca have the stronger ability to maintain turgor pressure. Pomegranates and Lessened Peach, Acacia and Pistacia chinensis are weak