The Populus schischkinii, N12, N2, N21 and SL - 1 were significant differences in rooting rate of hardwood cuttings, rooting number, rooting length and rooting index. Thair rooting ability of comprehensive analysis shows that N21 was excellent in rooting rate of hardwood cuttings, root number, rooting length and rooting index, including rooting length and rooting index of N21 are better than the control variety that is P. simonii x P. nigra, it's rooting ability of hardwood cuttings is the strongest, show that is better in rooting rate, root number, rooting length and rooting index.
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