We selected the soft branches of Acer saccharum Mash with strong growth,no plant diseases and insect pests as cutting materials in early June to late July. We cut the cuttings with a diameter of 4-6 mm and a length of 10-15 cm. We compared the effects of the different treatments on rooting. The exogenous hormone improved the rooting ability of cuttings.Using 1 000 mg·L-1indolebutyric acid( IBA) for 10 s was best with the root effect index of 0. 69. Followed by using 100mg·L-1IBA soaking for 6 h,the cutting ...