The invention discloses a layering
seedling culturing strong rooting
girdling technology method for tree varieties with difficult rooting. The method includes the following steps that step1, in the
growing season, an
annual growth lignified or semi-lignified new treetop is selected, a processed part is determined according to the varieties and different thicknesses, and the length of the treetop is required to be 2-15cm; step2, according to the processed part, a stem at the 1.5-13cm position above a root are subject to leaf removal, multi-line parallel equal-distance spiral
cutting is performed around the stem, the
cutting depth reaches a
cambium, according to the varieties and different thicknesses, the
cutting line distance is 0.2-1cm, the number of lines is 3-6, the number of surrounding cycles is 1.5-3, and 1-2 pieces of
bark are stripped off along the cutting lines; step3, rooting agent
processing and moisturizing burying are performed according to a routine technology. Compared with the prior art, the
bark is spiral and continuous, an
auxin high-concentration accumulation area is enlarged while the number of
nutrition accumulation parts are increased,
nutrition exchanging between the
bark and a
seed tree is guaranteed, the rooting speed of layering
seedling culturing is increased, the rooting number is increased, and the layering
seedling culturing of the tree varieties with difficult rooting is improved.