What is the function of sycamore? how to prune sycamore

The function of plane tree is mainly reflected in its ornamental value, and its tall and straight posture can be seen on both sides of the community, school and road.

I. the value and use of plane trees

The plane tree trunk is tall and stout, the branches and leaves are luxuriant, the crown is oval, the trunk end is straight, the bark is green and smooth, the lateral branches are stout and emerald green. They are fast-growing, easy to survive and resistant to pruning, so they are widely planted for street greening, are also used for fast-growing wood, and are highly resistant to toxic gases such as Ryukyu dioxide and chlorine. Leaves, flowers, roots and seeds can be used as medicine. Often used in gardens, communities, gardens, schools, institutions, factories, hillsides, courtyards, roadsides, in front of buildings.

2. Sowing and planting methods of sycamore

Seed collection: seeds should be collected from 15-30-year-old mother trees with straight stem shape and strong growth. Because the seedling seeds are easy to be scattered, it is appropriate to collect the seeds as soon as possible. The pure seedling seeds can be obtained by picking back the fruit and selecting by the wind. Seedlings seeds should be dry in the shade and should not be exposed to the sun. The seeds of seedlings can be dried and stored.

Sowing: the seeds of dried seedlings need to be soaked in 601 warm water to accelerate germination before sowing, otherwise they will germinate or lose their germination power every other year. Seedling seeds can also be stored in wet sand and sowed in spring the following year. The sowing land requires a deep, fertile, well-drained sandy loam with sufficient base fertilizer. Broadcast on the Internet. The strip distance is 30 cm, and the thickness of soil cover after sowing is 1-1. 5 centimeters. The sowing amount is about 15 kg per 667 square meters. The seedling seeds can be germinated and unearthed 4-5 weeks after sowing.

Sowing seedling management: slow seedling growth, but also like a certain shade, such as seedlings too early, too thin, will affect the growth of seedlings. In general, when the seedlings are about 10 meters high, they can be used for weeding and weeding. July is the fast-growing period, so the management of water and fertilizer should be strengthened to accelerate the growth of seedlings. Sycamore is the early growth type, the terminal bud forms early, and the height growth stops early. The height of annual seedlings is 50-60 cm. Under normal management, the height of seedlings in the same year can reach more than 50cm, and they will be planted and cultured in the next year. Three-year-old seedlings can come out of the nursery. The planting site should be selected in the high and dry place, and the base fertilizer should be applied in the hole. After drying, the saw should be sealed with wax. Pay attention to parasol planthopper, frost moth, diamondback moth and other pests, which can be controlled by petroleum emulsion, dichlorvos, dimethoate, methamidophos and so on. In the north, young trees should be bandaged with straw rope to keep out the cold in winter. Fertilize once in winter and once in early spring.

Third, the method and technology of shaping and pruning of Indus.

1. Sycamore belongs to uniaxial branch and is not resistant to pruning. The shaping mode should be determined along with the growth and the needs of green space application, and can not be forced. It can be cut into the central leading trunk, but because the main branches are well developed and the lateral branches are less, the central leading trunk often appears to be too high and in poor shape, so it usually does not carry out plastic surgery, but only takes the method of cutting off the middle trunk above the plastic belt (2.5-3 meters). Into a multi-leader trunk.

two。 The branches of Indus often grow in wheels, and there are often no branches between the upper and lower wheels, resulting in a large gap. If you don't pay attention to this phenomenon, it will lead to the result of "pinching the neck". No matter which kind of plastic surgery method, there is a certain degree of difficulty in selecting skeleton branches. Generally, some redundant branches in the same round are thinned to make the branches left by the upper and lower wheels balanced to form a skeleton.

3. The miscellaneous branches of sycamore are very few, and it is generally necessary to cut off a small amount of redundant branches and withered ears during maintenance and pruning. Shaping and maintenance and pruning should be carried out in winter.

The growth and cultivation of sycamore is very simple, and it is a kind of tree species that is easy to feed, but if it is not for the necessary time, it is actually not easy to prune, which saves a lot of trouble for the cultivation of sycamore.