There are many kinds of ornamental flowers and trees with different growth and development laws. In addition, they play a variety of roles in landscaping, so their modeling methods are also diverse.
(1) Natural shaping: All kinds of trees have a roughly fixed tree shape in the natural state, which is called natural tree shape.
Natural shaping refers to the auxiliary adjustment and promotion of crown shape by using various pruning techniques according to the natural growth characteristics of tree species, so as to form a natural tree shape as soon as possible.
This kind of plastic surgery should inhibit or cut off long branches, redundant branches, internal branches, insect branches and so on. Due to various factors, the growth balance is disturbed and the tree shape is destroyed. Pay attention to maintaining the symmetry and integrity of the crown.
Natural shaping is based on the unique natural tree shape of the tree itself, with a little manual adjustment and intervention, which conforms to the growth and development habits of the tree itself. Therefore, the tree grows well and develops robustly, which can give full play to the ornamental characteristics of the tree and improve its ornamental value.
Court shade trees, landscape trees or some street trees often use this kind of shaping.
In the garden green space, this plastic form is the most common, the implementation is also the most labor-saving, and it is the easiest to obtain good ornamental effect.
(2) Artificial shaping: Due to the special requirements of landscaping, trees can sometimes be manually cut into regular geometric shapes or irregular shapes. This kind of shaping method has a strong degree of manual intervention, and it is basically artificial shaping.
The shaping of geometric shapes is based on the laws of geometric shapes. If you want to cut the crown into a ball, you must first determine the radius length and the center position, and then you can move the scissors. If you want to cut the crown into a square, you must first determine the length of each side.
Informal plastic surgery includes wall-type and sculpture-type.
Wall plastic surgery should first cultivate a low trunk, arrange the main branches symmetrically or radially on the left and right sides of the trunk, and keep the branches on the same plane. This plastic method can often be seen in European classical courtyards, mainly for vertical greening of walls. Common forms are U-shaped, fork-shaped, rib-shaped and fan-shaped.
Sculpture plastic surgery should create shapes according to the intention and technical level of the trimmer. Often with the help of ropes, lead wires and other things in advance to make a framework, the shape should be coordinated with the surrounding environment. The lines should not be too complicated, and the outline should be clear, concise and generous.
Artificial shaping violates the natural law of tree growth and development, and has strong inhibition, which is not conducive to the growth and development of trees.
The plant materials used are required to be varieties with strong germination ability and branching ability. As long as the dead branches are cut off and replaced immediately, they can be kept neat and consistent.
Once it is not cut for a long time, its physical effect is easily destroyed.
Therefore, this kind of plastic surgery is often to meet special ornamental requirements, which should be fully considered in specific applications.