Large poplar tree branches and leaves, was ring-cut peeling reasons are as follows:

Trees in the maintenance process, if the bark cut a circle, a short period of time will not lead to the death, but rather it will allow it to grow more exuberant

Expanded knowledge

The structure of the bark

From the outside to the outside of the tree, the bark of the tree will be removed. strong>Structure of Bark

From the outside in, the bark can be divided into the outer epidermis, the periderm, which consists of the cork, cork-forming and corky inner layers, and the inner bast. The outer epidermis is the outermost dead tissue of the tree and consists of keratinized cells.

The pericarp is the part of the tree between the bast and the outer epidermis, and consists of a general term for the cork, cork-forming and inner layers of the cork, which are shed when the pericarp is formed. The cork is the main component of the outer layer of bark, can isolate the water and gas through, the tree has a protective effect.

The cork-forming layer is usually only one or two layers of cells, and is the tissue for the meristematic growth of cork, which grows outward into the cork layer, and inward into the inner cork layer, although in the root the cork-forming layer is transformed from the mid-column sheath. The inner cork layer is a layer of cells that differentiate from the cork-forming layer inward.

The phloem is the part of the bark that transports nutrients internally, between the trunk and the pericarp in the xylem. As the bark gradually grows and thickens, the outer layer of tissue dies, and the bark in a narrow sense includes only the cork and the dead tissue on the outside

The role of bark

The role of bark, in addition to protection from cold and heat to prevent diseases and pests, is mainly to transport nutrients. In the skin of the plant there is a layer of tissue called phloem, phloem is arranged in a pipeline, leaves through photosynthesis of nutrients, it is transported to the roots and other organs;

Some trees have been hollowed out in the middle, but there is still vibrant, it is because of the existence of the edge of the phloem, the ability to transport the nutrients of the cause. If the phloem is damaged and the bark is stripped off in large areas, the new phloem will not be able to grow in time, and the roots of the tree will die due to the lack of organic nutrients. As the saying goes, "People are afraid of being sad, trees are afraid of being stripped of their bark"; herein lies the reasoning.

The bark of the drug

1, the treatment of hot dysentery under the heavy: white head of two two, cypress three two, three two yellow, three two, three two wax bark. The above four flavors, with seven liters of water, boil two open, remove the dregs, take a liter of warm. If not cured, take one liter more. ("Typhoid Fever" Whitehead Weng soup)

2, the treatment of chronic bacillary dysentery: wax bark four money, raw ground elm, Tsubaki skin three money. Water decoction. (Hebei Handbook of Traditional Chinese Medicine)

3, the treatment of diarrhea: wax bark three money. Water decoction with sugar, divided into doses. (Heilongjiang Manual of Commonly Used Chinese Herbal Medicine)

4, the treatment of red eyes and eye sores: wax bark a two. To a large liter of water in a white porcelain bowl immersed in spring and summer a long time above the food, look at the blue color out, that is, with the chopsticks wrapped, point down the blue juice, lying on their backs point in the eyes of the affected, still the first from the big canthus full of eyes with a slight pain, the amount of time three, five degrees of meals, that is, lying on the side of the leaching but hot juice, more than ten degrees a day with, but two days of milliliters. Avoid vinegar and radish. ("Nearly Effective Fang")

5, the treatment of granuloma, dry stool: wax bark three money, rhubarb two money. Water decoction. Pregnant women should not take. (Hebei Handbook of Traditional Chinese Medicine)

6, the treatment of women's red and white with discharge, and hemorrhage more than: wax bark three two, two two dandelion, angelica body one or two. Wine wash, fried research for not, honey for pills sycamore big. Every morning to take five money, white soup down. ("Materia Medica Huiyan")

7, the treatment of children's epilepsy epilepsy fever and change evaporation fever: wax bark, Poria each one money, licorice five points, twenty roots of lamps, decoction of water. ("Pediatrics Summary")

8, cure psoriasis: bitter pomegranate skin one to two. Add half a basin of water decoction, decoction wash the affected area, every day or every two to three days wash. The liquid is still available after warming up, each decoction can be washed three times. Wash until cured. ("Selected full exhibition - skin disease")

9, elm bark juice for ringworm. Willow bark treatment of skin diseases.

10, neem bark is an ecological insecticide.