Detailed Explanation of the Specific Operation Method for Girdling Jujube Trees

Girdling of jujube trees proceeds from bottom to top, with one ring made each year, moving upward year by year, with each ring 5 cm apart, all the way up to the fork of the main branches, then starting again from the base and moving upward. The girdling cuts generally do not overlap. When girdling, first use a wooden tree hook to scrape away the old bark at the girdling site, exposing the white phloem tissue, then use a girdling knife to make two circular cuts, 0.5 cm wide and deep enough to reach the xylem, and afterward remove the phloem tissue between the circular cuts, being careful not to damage the xylem, and a little phloem tissue may also be left behind.