甘蒙柽柳（ＴａｍａｒｉｘａｕｓｔｒｏｍｏｎｇｏｌｉｃａＮａｋａｉ）、多枝柽柳（Ｔ．ｒａｍｏｓｉｓｉｍａＬｅｄｅｂ．）、中国柽柳（Ｔ．ｃｈｉｎｅｎｓｉｓＬｏｕｒ）、短穗柽柳（ＴｌａｘａＷｉｌｄ．）、刚毛柽柳（Ｔ．ｈｉｓｐｉｄａＷｉｌｄ．）、密花柽柳（Ｔ．ａｒｃｅｕｔｈｏｉｄｓＢｇｅ．）、甘肃柽柳（Ｔ．ｇａｎｓｕｅｎｓｉｓＨ．Ｚ．Ｚｈａｎｇ）和短毛柽柳（Ｔ．ｋａｒｅｌｉｎｉＢｇｅ．）在土壤缓慢水分胁迫条件下，组织相对含水量（ＲＷＣ）均有下降，且随着水分胁迫时间的延长，下降程度加剧。ＲＷＣ下降程度种间存在差异。细胞膜透性缓慢增加，增加程度种间存在差异。土壤缓慢水分胁迫条件下，柽柳植物组织细胞膜透性增加与组织相对含水量的降低有一定关系，二者呈显著负相关 Tamarix austromongolica Nakai, T.ramosisima Ledeb., T. chinensisLour, TlaxaWild., T.hispidaWild., T.arceuthoidsBge. ), T.gansuensisH.Z.Zhang and T.kareliniBge. In the condition of slow soil water stress, the relative water content (RWC) decreased, and with the increase of water stress time , The degree of decline intensified. RWC decreased the degree of differences between species. Cell membrane permeability increased slowly, increasing the degree of differences between species. Under the conditions of slow soil water stress, the increase of cell membrane permeability of Tamarix spp. Had a certain relationship with the decrease of relative water content of tissues, and the two were negatively correlated