Reasonable tree structure can ensure that the inner cavity of the tree is fully ventilated and transparent. Jujube trees mainly have sparse, happy and dry, natural round head and many main branches, and Y-shaped. No matter what kind of tree it is, the trunk branches should be strong and firm, and the branches produced should be properly proportioned, with distinct layers and good light transmittance. But in the concrete shaping and pruning, we should follow the principles of site, variety, tree shape and guidance, and we can't shape it mechanically.

(1) The trunk is sparse. Used for tree species with thick trunks, such as Rinrin jujube, Jiaocheng Junzao, Taigu Hu Ping jujube and Linfen Tuanzao.

The characteristics of the tree: the main branches are layered, staggered up and down, and the distance between layers is large. The arrangement of lateral branches in the same layer and at the same level requires that the size of unit fruiting branches be matched on the same side of the main branches, which is a high-yield jujube tree.

Tree structure: the trunk height is 1.5m, and the whole tree has 8 ~ 10 main branches, divided into 3 ~ 4 layers. The first layer can retain 3 ~ 4 main branches, and the second and third layers can retain 2 ~ 3 main branches respectively. The spacing between the first and second floors should be1.2 ~1.5m. If the cultivation conditions such as water and fertilizer are good, the number of main lateral branches can be appropriately increased.

(2) Happy modeling. Suitable for varieties with weak dryness and weak growth potential (such as Jishan Banzao, Yuncheng Xiangzao and Lizao). ), or a plot with poor terrain, light or soil quality. It is characterized by short tree body, simple structure, easy molding and good ventilation and light transmission.

Tree structure: trunk height 1 ~ 1.5m, without central branches. There are 3 ~ 4 main branches on it, and the opening angle is 45 degrees (in the shape of a happy character). The unit fruiting branch group is planted on the main branches at all levels according to the space size.

(3) Natural round head with many main branches. Suitable for varieties with strong growth and weak dryness, such as Langzao. Features: The tree is tall, with many main branches, fast growth and high yield.

Tree structure: This tree is originally a tree with a central trunk, but there are many main branches on it at intervals of about 50 cm, which are not layered, and each main branch has 2 ~ 3 side branches. In this way, the unit branches are naturally distributed on each group of backbone branches. Most of the main branches rotate on the trunk. After many years, the growth force is roughly the same, and there is no obvious central leadership branch. Moreover, the angle of the main branches is relatively open (50 ~ 60 degrees), and the growth potential is strong. The crown is naturally happy from the central branch or the last main branch, forming a natural semicircle.

(4)Y-shape (also called double-stem shape). The tree is short, with good lighting conditions and small shading surface, which is suitable for jujube-grain intercropping. Willow wood is suitable for this tree shape.

Tree structure: the stem is 60 ~ 100 cm high, and there are two main branches on it, both of which are at an opening angle of 45 degrees. The two main branches extend in opposite directions, and there are 4 ~ 5 fruiting unit branches on each main branch, which are planted in opposite positions respectively to form a plane with the main branch.