Detailed Explanation of Year-by-Year Pruning Methods for the Trunk-Layered Tree Form

The purpose of pruning in this period is to cultivate the third and fourth layers of scaffold branches. The cultivation method is the same as that used from year 5 to year 6, and the spacing between layers can be appropriately smaller, about 60 cm. At the same time, 1 to 2 secondary branches are cultivated on the first and second layers of scaffold branches; the cultivation of secondary branches is the same as for the open-center form. As the tree ages, the central leader bears an increasing load of jujubes, so it no longer extends upward; under natural growth it bends and droops, and generally there is no need to prune it out manually, nor is there any need to manually train an upright central branch, which helps ventilation and light penetration. After 8 years it enters the natural formation period, and by about 15 years of the natural formation period, a complete natural open-center tree form is formed.