【摘要】 以东北地区３个主要造林树种２年生苗木的叶为材料，应用目前国内较为先进的ＥＬＩＳＡ激素测定方法，测定了不同浓度ＮａＣｌ单盐处理后苗木叶子的脱落酸（ＡＢＡ）、细胞分裂素（ＩＰＡ）、吲哚乙酸（ＩＡＡ）、赤霉素（ＧＡ）四种激素的含量，发现不同树种的同一激素含量及同一树种的不同激素含量均有较大差异。在盐胁迫条件下，激素含量发生变化，随着盐浓度的增加，ＡＢＡ的含量呈上升趋势，ＩＰＡ、ＩＡＡ、ＧＡ含量呈下降趋势，当盐浓度增加到一定程度，激素含量变化趋势减弱。提出了在盐逆境条件下，四种激素在提高树木抗盐性的作用。更多还原

【Abstract】 The leaves of the main afforestative species of 2-year-old seedling in the northeast were used as materials The content of endogenous hormones such as ABA, IPA, IAA, GA were measured by using ELISA The result showed that the same hormones content of different tree species and different homone content of the same tree species were relatively different Under salt stress, hormone content was changed ABA tends to increase, but IPA, IAA and GA tend to decrease with the salinity increa-sing When salinity reaches certain extent, hormones content change is weakened The function of four hormones under salt stress was put forward更多还原