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刺槐（ＲｏｂｉｎｉａｐｓｅｕｄｏａｃａｃｉａＬｉｎｎ．）、湿地松（ＰｉｎｕｓｅｌｉｏｔｉＥｎｇｅｌｍ．）和侧柏〔Ｐｌａｔｙｃｌａｄｕｓｏｒｉｅｎｔａｌｉｓ（Ｌ．）Ｆｒａｎｃｏ〕种子经０３％ＣａＣｌ２，２５０μｇ／ｇＨ３ＢＯ３和２５０μｇ／ｇ多效唑（ＭＥＴ）浸种２４ｈ，然后测定幼苗的耐盐性。结果表明，在０．３％ＮａＣｌ胁迫条件下，不同种子预处理方法对种子发芽率、平均苗高、根茎比、简易活力指数（ＳＶＩＳ）以及幼苗中Ｎａ＋与Ｋ＋的累积量、Ｎａ＋／Ｋ＋比及游离脯氨酸含量有较大影响。树种不同，处理效果也存在明显差异。湿地松以０．３％ＣａＣｌ２，侧柏以２５０μｇ／ｇＨ３ＢＯ３浸种处理效果最好，显著提高种子发芽率、平均苗高、根茎比和ＳＶＩＳ，降低幼苗Ｎａ＋吸收量和Ｎａ＋／Ｋ＋比，缓解盐胁迫逆境。３种种子预处理方法均降低刺槐种子发芽率、平均苗长和ＳＶＩＳ，但提高刺槐幼苗游离脯氨酸含量和幼苗根茎比，减少幼苗对Ｎａ＋的吸收，降低Ｎａ＋／Ｋ＋比
Robinia pseudoacacia Linn., Pinus lioti Engelm. And Platycladus orientalis (L.) Franco seeds were soaked with 0.3% CaCl2, 250 μg / g H3BO3 and 250 μg / g paclobutrazol (MET) Salt. The results showed that seed germination rate, average seedling height, root / shoot ratio, simple vigor index (SVIS), Na + / K + accumulation, And free proline content have a greater impact. Different species, there are significant differences in treatment effect. Slash pine with 0.3% CaCl2, Platycladus officinalis 250μg / gH3BO3 soaking the best, significantly improve the seed germination rate, average seedling height, rhizome ratio and SVIS, reduce seedling Na + uptake and Na + / K + ratio to alleviate the salt stress adversity. All three seed pretreatment methods reduced seed germination rate, average seedling length and SVIS of Robinia pseudoacacia, but increased free proline content and seedling rhizome ratio of seedlings, decreased Na + uptake and decreased Na + / K + ratio