Shaping and pruning of young magnolia trees: shaping and pruning in the year of planting: the seedling height should be above 1 m in the year of planting. After survival, the terminal buds were removed. First, select branches from 80 cm above the ground as fixed stem points, and then select three branches from the fixed stem point to the lower mouth of the central trunk branch scissors (buds), which are evenly distributed, stout and full, and have a large opening angle (50 ~ 60 is appropriate. When cutting short, pay attention to the fact that the buds must be fully developed, on the lower side of the branches. At the same time, we should also pay attention to the direction of bud cutting, left and right, cross growth, and avoid overlapping. Branches other than the main branch should be pruned according to the growth intensity of seedlings, and the weak branches should be kept less or all thinned out to concentrate the distribution of nutrients and ensure the development of the main branch. If the trees grow vigorously, some delicate branches can be reserved appropriately to ease the tree growth and promote early flowering. The remaining three main branches can be used as the first level of the evacuation hierarchical tree.

Pruning in the second year of planting: core removal from the central main branch. On the central trunk branch at a distance of 1 m from the first floor (that is, the third trunk branch from the bottom to the top of the first floor), two robust lateral branches are selected as the main branches of the second floor and cut short at 25 cm. The direction of the main branches of the second layer must be on a different vertical plane from that of the first layer to avoid the overlap of the main branches.

Pruning in the third year of planting: when the central main branch is 70 cm long, pruning will be carried out, and 1 ~ 2 branches with vigorous growth will be selected as the third main branch about 50 cm from the bottom to the top of the second main branch. These 1 ~ 2 main branches are cut short at the position of 20 cm, and the direction of the main branches of the third layer must be distributed between the different vertical planes of the second layer and the first layer, so as not to affect the branches of the next layer. The annual branches of each layer of main branches can be shortened by 1/4 or 1/3, and the opposite branches should also be shortened to promote multi-branching.

After more than three years of shaping and pruning, the skeleton of crown structure has basically formed. Pruning in the future is to alleviate the tree potential and prevent excessive growth. Cut off the extended branches of the central main branch at the top of the crown every year, cultivate branches at all levels, supplement the inner chamber and periphery of the tree, and promote high and stable yield.