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从垂柳×白柳（S.babylonica×S.alba）;垂柳×爆竹柳（S.babykibuca×S.fragilis）;垂柳×旱柳（S.babylonica×S.matsudara）;旱柳×白柳（S. matsudara×S.alba）;旱柳×爆竹柳（S.matsudara×S.fragilis）、旱柳（东善）×旱柳（哈尔滨）等杂种一代,以及垂柳自然授粉实生苗中选出45个单株,分别扦插获得无性系。利用其插条进行无性系苗期测定,测定是以亲本和外引优良杂种无性系为对照,根据对苗高、底径、分枝特性等性状的测定分析,被测定的无性系其杂种优势非常明显,绝大多数属超亲优势。按生长优势和优良的分枝性状,评选出ba1、bf36、mf4、ma2、ma4、bm1、bm4、b1、b4、及m2等十个优良无性系。
Weeds from S.babylonica × S.alba, S.babykibuca × S.fragilis, S.babylonica × S.matsudara, S. matsudara × S.alba, S.matsudara × S.fragilis, Salix psammophylla × Salix matsutake × Harbin, etc., and 45 pollinators were selected from the natural pollination seedlings of weeping willows. , Respectively, cuttings obtained clones. Based on the analysis of the traits of seedling height, bottom diameter and branching characteristics, the clonal clonal heterosis Obviously, the overwhelming majority are super-pro-dominant. Ten elite clones, ba1, bf36, mf4, ma2, ma4, bm1, bm4, b1, b4 and m2, were selected according to their growth and excellent branching traits.