The invention discloses a method for promoting
cutting rooting and
seedling formation of tender branches of
xanthoceras sorbifolium, and belongs to the technical field of
forestry biology. The methodcomprises the following steps: in spring, excellent
germplasm of the
xanthoceras sorbifolium is selected, branches are
cut, whole plants are covered by bags for shielding light,
etiolation tender branches are collected 70 days, 80 days and 90 days after
etiolation treatment is performed, the tender branches are pruned to tender
branch cuttings, wherein each tender
branch cutting is about 7-10 cm,the cuttings are processed by using indoleacetic acid with different concentrations,
cutting is performed, cuttings are normally managed in a full-illumination spray cutting
bed for rooting, 90 days after the cutting is performed, a rooting rate is counted, 110 days after the cutting is performed, growth period prolonging treatment is performed by using a simplified
greenhouse on the cutting
bed,and 280 days after the cutting is performed, a
seedling forming rate is counted. According to the method disclosed by the invention, the
etiolation treatment is performed for 80 days, the indoleaceticacid with a
high concentration of 5000 mg / L is used for treatment, and cutting management is performed under the full-illumination spray conditions, so that the rooting rate and
seedling forming rateof the tender branches of the
xanthoceras sorbifolium are greatly improved; and the method for promoting the cutting rooting and seedling formation of the tender branches of the xanthoceras sorbifolium provided by the invention provide a technical basis for excellent seedlings of vegetative propagation much required by large-scale planting of a xanthoceras sorbifolium forest in China.