In the streets of the magic capital.
There will always be a plane tree on the road.
Attract citizens and tourists to stop and watch.
Many people can't help but sigh.
Shanghai's plane trees are just beautiful!
So such a plane tree with a round crown and large and shady leaves.
How did it come to be?
You must be curious
Friends who often go to haircuts may have a deep understanding that no matter how thick and messy hair is, under the exquisite skills of Mr. Tony, it can always turn decay into magic. The same is true for the pruning of plane trees, how to cut out the shape and layering, which can be very difficult
What pruning is popular among plane trees in Shanghai"Styling"?
Winter tree pruning is not only a physical task, but also an art. In Shanghai, you can see three ways to prune plane trees:
"Happy" type pruning.
Fruit-controlled pruning (after pruning for the trees on the left and before pruning for the trees on the right).
Maintenance pruning.
Different pruning methods are suitable for plane trees of different sizes and different growth environments, and either method is based on the "happy" pruning method, which cultivates a beautiful and round crown shape to play a variety of functions such as tree landscape and shade.
Plane trees have lush branches, which branches need to be pruned?
The winter pruning of plane trees should follow the characteristics of tree growth and crown shape, and should be pruned with diseased and insect branches, long branches, overly dense branches, drooping branches and dead branches, which hinder the normal growth of trees and are not conducive to crown cultivation, so they need to be removed decisively.
Branches need to be trimmed:
Fruit bulbs, drooping branches, diseased branches, contradictory branches, erect branches.
Dead branches, overlapping branches, inward branches, overly dense branches, and long branches.
Branches need to be kept:
Vegetative branches, stepping branches, ornamental branches, skeleton branches, outward branches.
In addition, the fruit balls stored in winter are prone to cause the problem of fruit hair fluttering in the following spring, so it is necessary to focus on pruning the plane fruit balls in winter.
When pruning, it is necessary to retain skeleton branches, decorative branches, vegetative branches, outward branches, and pedal branches to ensure that the crown of plane trees is rounded, and pruning and maintenance are "controllable climbing".
How is the skeleton of the plane tree cultivated by pruning it one by one?
The skeleton culture of plane trees refers to the requirements of the city's "Technical Standards for Street Tree Planting and Maintenance" and technical manuals. Taking the "happy" pruning as an example, when cultivating the skeleton step by step, three branches with strong growth, an angle of 120° and an angle of 45° to the extension line of the trunk were retained at the first-level branch point of the main trunk, and the length of about 50 cm was shortened as the first-class skeleton branch.
The second-level skeleton branch is the newly germinated branch at the top stub position of the first-level skeleton branch, and the outward branches growing on both sides of the first-level skeleton branch are selected as the second-level skeleton branch.
*For skeletal branch culture, it is necessary to continue to stub the secondary branches, and adopt the same method of leaving branches to cultivate the next level of skeletal branches. Through years of step-by-step cultivation of skeleton branches, the crown type of "three strands, six branches and twelve branches" can be achieved.
What is the importance of plane pruning?
There are two commonly used winter pruning techniques for plane trees: thinning and stubbing. Pruning is the most conventional pruning method, such as thinning old and weak branches, diseased branches, damaged branches, dead branches and so on.
Stubbing is to cut off a part of the annual branches, which are divided into light stubs, medium stubs, and heavy stubs according to the length of the cut.
The specific pruning techniques need to be flexibly applied according to the actual situation of the tree, and finally realize the purpose of the tree skeleton is round, the pruning incision is smooth and smooth, there is no tearing phenomenon, and no short pile is left.
Scientific and professional pruning techniques are the guarantee of strong tree growth. Although the pruned plane trees look "bare", due to their rapid growth and strong germination ability, after professional pruning, the trees can still flourish and provide shade and shelter from the heat in the following summer.
In recent years, Shanghai has continued to promote the fine pruning and maintenance of street trees, which has effectively reduced the number of fruit bulbs, effectively controlled plant diseases and pests, and made the benefits of ecological landscape more and more prominent.
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Editor: Ye Fangfang.
*Please indicate that it is from the official account of Shanghai Xuhui.