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采用不同浓度ＮａＣｌ处理１４种主要造林树种两年生苗木，应用ＥＬＩＳＡ激素测定方法，分析苗木叶子的脱落酸（ＡＢＡ）、细胞分裂素（ＩＰＡ）、吲哚乙酸（ＩＡＡ）、赤霉素（ＧＡ）四种激素的含量变化，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。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。根据林木四种激素变化及相互关系，提出了抗盐平衡系数及计算分析方法。综合考虑苗木在盐胁迫处理时的实际表现，以苗木的激素抗盐平衡系数为选择指标，参试树种（品种）的抗盐性由强至弱依次为；白榆、樟子松、水曲柳、沙松、红松、紫椴、红皮云杉、１１８号杨、白桦、７９８６０１杨、兴安落叶松、中绥１２号杨、日本落叶松、黑林３号杨。
The two-year-old seedlings of 14 main afforestation species were treated with different concentrations of NaCl, the ABA, IPA, IAA, GA of seedling leaves were analyzed by ELISA method. Four hormones content changes, found that different species of the same hormone content and the same species of different hormone content are quite different. With the increase of salt concentration, the contents of ABA increased and the content of IPA, IAA and GA showed a decreasing trend. When the salt concentration increased to a certain extent, the change tendency of hormone content weakened. According to the changes of the four hormones in the forest and their relationship, the salt balance coefficient and calculation method were proposed. Considering the actual performance of seedlings treated with salt stress, taking the hormone-salt balance coefficient of seedlings as the selection index, the salt-resistance of the tested species (varieties) from strong to weak were as follows: elm, Pinus sylvestris var. Liu, saffron, Korean pine, Tilia amurensis, Picea rubra, Poplar 118, Betula platyphylla, Poplar 798601, Larix ginseng, Zhongsui 12 poplar, Japanese larch, Black forest 3.