Medium density is generally spindle-shaped or slender spindle-shaped, with a central stem, and large, medium and small fruit branches are directly planted on the central stem, with stem height of 30-50 cm, tree height 1.5-2.5m (depending on plant spacing) and crown width 1.3-2.5m (depending on plant spacing). The lower fruiting branch group is longer than the upper fruiting branch group, and the angle between the branch group and the central trunk is 80 ~ 90; The above fruiting branches are short, and the incident angle is 70 ~ 80. The fruiting branches are arranged upward in turn, and 70% ~ 80% of the fruits are planted in the middle and upper parts of the central trunk and main branches. The branch-to-thickness ratio of the central trunk to the bearing branch group is greater than 2∶ 1, and controlling the thickness, length and angle of the bearing branch is the key to adjust the tree (Figure 22).

Fig. 22 slender spindle shape

2. Cylindrical shape

It makes the fruiting branches medium or small, and its tree structure is similar to a free spindle shape, but the length and angle of the fruiting branches planted on the central trunk are not much different from those of its upper and lower branches, and it looks like a cylinder, so it is called a cylinder. In the case of high density (plant row spacing 1 m× 2 m), this shape is often adopted because the fruiting branches planted on the central stem cannot grow and elongate too much (Figure 23).

Figure 23 Cylindrical shape