How to cultivate robust secondary branches and fruit-bearing mother branches through summer pruning of young trees?

First, keep the central leader jujube shoot and the jujube shoots of the main and lateral branches, and remove the buds of the other sprouting jujube shoots early; for the retained jujube shoots, depending on their growth, keep 4 to 8 secondary branches and then pinch the tips. After the jujube shoots have basically stopped growing, generally in July to August, bend the branches to open the angle. During summer pruning, the number of retained jujube shoots must be well controlled, generally keeping 4 to 6 for 2- to 3-year-old trees and 7 to 10 for 4- to 6-year-old trees. When there is a certain amount of branching, ring-barking can be done to promote fruiting.