What are the characteristics of pine trees and what are the characteristics of pine trees

Pine: coniferous evergreen tree, with a trunk, many side branches, can be used for wood, ornamental, some varieties have high ornamental value. Other varieties can also extract turpentine.

The resin secreted by pine trees is called pine resin. From the point of view of chemical composition, pine resin is mainly a solution formed by the dissolution of solid resin acids in terpenes. After the pine resin is processed, the volatile terpenes are called turpentine, and the non-volatile resin acid fusion is called rosin.

When pine resin just flows out of the resin channel of the pine trunk, it is colorless and transparent, and its terpene content can reach 36%. After contact with air, terpenes volatilize quickly, and at the same time, resin acid precipitates in crystalline form, and the pine resin itself gradually becomes thick, taking the form of a honey-like semi-fluid. Pine resin from forest areas to factories often contains a variety of mechanical mixtures, including pine needles, bark, wood chips, insects and dust.

The characteristics of pine trees are manifested in the branches and leaves, habits, pine trees in the process of growth, its branches are always straight and upright, will not bend, the leaves are green all year round, with high ornamental value, and pine trees have strong drought resistance, can grow in a water-scarce environment.

1. The branches are straight

The peculiarities of the pine tree are manifested in the branches. Pine trees are evergreen trees or shrubs, and in the process of growth, their branches are always in an upright and straight state, even if the plant is skewed due to external factors, it will grow in the direction of skew, and the branches will not bend.

2. Evergreen in all seasons

The peculiarities of the pine tree are manifested in the leaves. In the process of growth, the leaves of the pine tree are green all year round, although the leaves will fall in all seasons, but after the leaves are dropped, new leaves will grow for growth, and the pine tree is tall and can grow to a height of 75 meters.

3. Strong drought resistance

The characteristics of pine trees are manifested in their habits. The leaves of the pine tree are needle-shaped, and this shape helps the plant to reduce water consumption, which makes the pine tree more resistant to drought, and the pine tree has more branches and leaves, which can absorb moisture from the air and use it for its own growth.

The tree is relatively large, reaching a height of up to 45 meters and a diameter at breast height of up to 1.5 meters. The varieties are relatively rich, there are more than 80 varieties of pine, the most common are Pinus tabuliformis, Alpine pine, whitebark pine and so on. The lifespan is relatively long, generally reaching more than 1,000 years, and the maximum can be more than 3,000 years.

It is highly adaptable, whether it is in the Gobi Desert or on the edge of mountain cliffs.

Common pine species are cedar, five-needle pine, whitebark pine, black pine, larch, etc., and the pine tree shape of these varieties is relatively large, after maturity, the height of the tree can reach up to 45 meters, and the diameter at breast height can reach up to 1.5 meters. In addition, some varieties of pine trees can be used to make furniture, ornaments, decorative panels, etc. due to their better material, and the ** of these varieties of pine trees on the market is relatively high.

There are more than 80 varieties of pine trees, and the most common and common pine trees are black pine, red pine, pine sylvestris, pine tabuliformis and so on that grow in Northwest China and North China, masson pine, alpine pine, Huangshan pine, etc., as well as Bashan pine, North American short pine, Taiwan pine and so on that grow in Qinba region.

Although there are many varieties of pine trees, and although the lifespan of each variety is different, most of the pine varieties can live for more than 1,000 years, and even more can live for more than 3,000 years. In addition, some pine trees take more than 100 years to bear fruit, while others only take more than 100 years to bear fruit.

The pine tree does not have strict requirements for the growth environment, on the contrary, it has a strong adaptability to the environment in which it grows, whether it is the Gobi Desert or the edge of the mountain cliff, it can grow tenaciously and is not affected by it.

The pine tree is characterized by being shade-tolerant and drought-resistant, evergreen in all seasons, tall and straight, it will still stand straight no matter how harsh the environment, with integrity, strength, simplicity as the beauty. No matter how harsh the environment is, the pine tree still grows upright, and is regarded as a symbol of integrity and simplicity.

Pine is a plant of the family Pinaceae, Pinus. There are more than 80 kinds of pine trees in the world, and the pine trees are mainly divided into Masson pine, Pinus tabuliformis, whitebark pine, podocarpus, Huashan pine, Dabie Mountain five-needle pine, Korean pine, red pine, black pine, Huangshan pine, Yunnan pine, golden pine, sylvestris pine, cedar and so on. For example, Pinus tabuliformis, Pinus sylvestris, Pinus sylvestris sylvestris and Pinus sylvestris sylvestris distributed in North China and Northwest China, Pinus massoniana, Pinus huangshanensis and Pinus alpine in Central China, Pinus bashanensis in Qinba Mountains, as well as Pinus taiwanensis and Pinus breviflora in North America, are the main tree species for afforestation in barren mountains in China.

Pine trees are wheel-shaped branches, with long internodes, relatively thin and straight branches or slightly curved downwards, and slender needles in bundles. Its canopy looks fluffy and not compact, and the word "pine" is a visual description of its canopy characteristics. Therefore, "pine" is a type of tree with a fluffy crown.

Pine trees are sturdy and have a very long lifespan.

In addition to its economic use, pine trees also have important ornamental value because of their majestic and vigorous posture, tall and long-lived trees. It is an important landscape component in many scenic areas in China. The Chinese regard the pine tree as a symbol of steadfastness, chastity and longevity.

Pine, bamboo, and plum are known as the "three friends of the cold year", which is a tenacious spirit that is not afraid of adversity and overcoming difficulties.

Pine trees are characterized by large tree size, many species, long lifespan, and strong adaptation.

1. The tree type is large

There are many types of pine trees, but most of them are tall trees, which can reach a height of about 45 meters and a diameter at breast height when mature. And its material is relatively good, and there are many varieties that are very famous timber species.

2. There are many types

There are nearly 80 kinds of species in the world, such as Huangshan pine, Taiwan pine, wetland pine, tabuliformis pine, Anhui five-needle pine, ground pine, Taiwan fruit pine, bank pine and so on.

3. Long life

Pine trees have a comparatively longer lifespan. Some experts have found that many varieties have a lifespan of more than 1,000 years. However, the specific fruiting time is different, some varieties will bear fruit after five or six years of maintenance, and some will bear fruit for decades or even hundreds of years.

4. Strong adaptability

It is highly adaptable to terrestrial environments and can tolerate high temperatures of 50 degrees Celsius and low temperatures of minus 60 degrees. It is also very resistant to barrenness, likes light, and is drought tolerant.

How to grow pine trees

Its growth rate is relatively slow, and the planting is generally one or two-year-old seedlings. Note that the transplant must be accompanied by soil balls, which can reduce root damage and improve the survival rate. When planting, bring the soil ball into the soil together, compact the surrounding soil, and water it thoroughly in time.

The first two waterings should be watered thoroughly, and the water should be controlled in the later stage.

1. Pine is an evergreen tree, with a few shrubs. The bark is mostly scaly, the leaves are needle-shaped, the fruit is spherical, and the seeds are called pine seeds and can be eaten. And wood and resin are very versatile.

2. There are more than 100 varieties of pine trees in the world, all of which are positive fast-growing tree species, in addition to the need for some shade during the seedling period, they like light and fertile and moist soil during the growing period. The original native varieties of our province are Huashan pine, Pinus tabuliformis, whitebark pine, Masson pine, Bashan pine and juniper, and the varieties introduced from home and abroad are North China larch, cedar, Yunnan pine, Pinus sylvestris, Pine sylvestris, Pine marsh, Torch pine, etc. The biological characteristics of these tree species vary from warm, humid climates to mild, cool climates.

Some are hardy and drought-resistant, while others are not cold-tolerant and drought-resistant. The scope of suitable cultivation of several pine trees is mainly introduced.

3. Among them, the famous pine species - Huashan pine, also known as white pine, five-whisker pine can be planted in Qinba Mountain, some mountainous hills in Weibei, the average annual temperature should be below 15, and the annual precipitation is 600-1500 mm. It has strong adaptability to soil, and can grow on mountain brown soil, red and yellow soil, and red limestone soil. However, it has strict requirements for soil moisture, and is not tolerant to drought and barrenness, and is less tolerant to salinity and poor drainage.

Huashan pine is more cold-tolerant, can grow normally at a low temperature of minus 7-10, and can also grow at an absolute low temperature of minus 31. Huashan pine is a tall tree, with green needles and cones, and it is also a dry fruit tree species that is rich in nutrients and delicious for garden greening.

The characteristics of pine trees are: tall trees, a wide variety of trees, and long lifespans.

1. The tree shape is tall

Tall trees are one of the characteristics of pine trees, there are many types of pine trees, but most of the pine varieties belong to tall trees, some pine trees can reach a height of 45 meters after maturity, and the diameter of the main trunk can reach about meters. And most of the pine trees are of good quality, so there are many famous woods that are taken from pine trees.

2. A wide variety

In addition, there are many kinds of pine trees, there are more than 80 kinds of pine trees known in the world at present, the more common ones are Huangshan pine, Taiwan pine, tabuliformis pine, Anhui pine, five-needle pine, ground pine, Taiwan fruit pine, bank pine, etc., in addition to masson pine, alpine pine, Bashan pine, sylvestris pine and other varieties.

3. Long life

Pine trees also have the characteristics of long life, according to relevant research data, most of the pine varieties have a lifespan of more than 1000 years, and the specific fruiting time of different pine trees is different, some pine trees need to be cultivated for several years to produce pine cones, and some pine trees need to be cultivated for decades or hundreds of years to produce pine cones.

Distribution:

There are about 80 species in this genus, distributed in the northern hemisphere, north to the Arctic region, south to North Africa, Central America, Indochina Peninsula to the south of the equator in Sumatra, and is the main tree species for wood and pine resin production in the world.

There are 22 species and 10 varieties in China, which are distributed all over the country several times, among which Korean pine, Huashan pine, Yunnan pine, masson pine, tabuliformis pine, Pinus sylvestris sylvestris var. In addition, 16 species and 2 varieties were introduced, among which P. marshland, Pinus flare, Pinus caribbean, Pinus longifolia, Pinus rigida and Pinus nigra grew rapidly, all of which were promising afforestation tree species.