What are the growth and development characteristics of young jujube trees during their juvenile stage?

The juvenile stage of a jujube tree refers to the period from the planting of the sapling until the main branch framework is formed and it begins to produce a yield. Generally, this period takes about 5 years. During this stage, vegetative growth is dominant, the vegetative branches extend along a single axis, the hierarchy of the main branches is obvious, the roots develop vigorously and mainly extend horizontally, and although the tree can bloom during this period, the amount of fruit set is relatively small.