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本项试验研究了镧（Ｌａ）、铈（Ｃｅ）混合硝酸稀土对刺槐一年生苗木生长及插穗成活的影响，结果表明，适宜浓度的稀土溶液在刺槐苗木上叶面喷施或浸泡插穗，可以明显促进苗木生长和插穗的成活，其中，７００μｇ／ｇ稀土溶液处理，使苗木的叶面积增加４４．８％～５０．８％，苗高增加２５．６％～３１．５％，地径增加２２．４％～４２．７％，植株干重增加了３３．２％～３４．２％。
This study investigated the effects of lanthanum (La) and cerium (Ce) mixed rare earth nitrate on the growth and cuttings survival of Robinia pseudoacacia annual seedlings. The results showed that appropriate concentration of rare earth solution on the leaves of Robinia pseudoacacia spraying or soaking cuttings can be obvious The growth of seedlings and the survival of cuttings were promoted. Among them, 700μg / g rare earth solution increased leaf area of seedlings by 44.8% -50.8%, seedling height increased by 25.6% -31.5% and soil diameter increased by 22 .4% ~ 42.7%, dry weight of plants increased by 33.2% ~ 34.2%.