1. Rosin and turpentine can be extracted by cutting turpentine from pine tree trunks. Pine nuts are rich in protein and oil, and the oil content is above 30%. Among them, there are 20 species with edible value, such as Korean pine, slash pine and Huashan pine, all of which are produced in China. The seeds of Korean pine can also be used as medicine, and the medicine name is "sea pine seed", which is a nourishing tonic.

2. Pine seed coat is rich in tannin, and tannin extract can be extracted by soaking in water. After the bark is crushed, it can be mixed with other raw materials and pressed into hard fiberboard. In addition, pine needle volatile oil can be extracted from pine needles.

3. Pine needles are rich in carotene, vitamins, fat, protein, calcium, phosphorus and other mineral elements, which can be processed into feed additives for poultry and livestock. Incomplete combustion of pine branches and roots in kiln can make pine smoke (see dry distillation of wood), which can be used to make ink, ink and black paint. Pine branches and roots are also raw materials for cultivating valuable medicinal material Poria cocos.

4. Pine trees are all treasures, and the trunk is a very widely used wood, which is also a high-quality raw material for papermaking. The fat liquid of pine trees can be used to make rosin and turpentine. In the past, pine needles were allowed to rot or burn during logging, which not only wasted forest resources, but also easily caused forest fires, soil acidification and diseases and pests.

Although there is turpentine in pine bark, collecting turpentine will pay a heavy price and get little income. A pine tree can only collect turpentine once a year, and the turpentine collected after bark girdling can only be sold for 2 yuan RMB, and it can only be sold for 20 RMB in ten years. Pine trees whose bark has been cut can't become wood, and will die within 8- 10 years due to lack of nutrients, so destructive cutting can only cause resource exhaustion and waste.

6. Pine not only has the medicinal value of preventing and treating oxidative stress and metabolic diseases such as hypertension, coronary heart disease, heart disease, diabetes, stroke and Alzheimer's disease, but also has the health care function. Pine needles are rich in amino acids, various fat-soluble and water-soluble vitamins, more than 40 macroelements, various trace elements and crude fiber, which can be developed into various health foods, drinks and wines that can enhance immunity, promote hair growth, reduce blood fat, soothe the nerves and delay aging.

7. The leaves are free from pollution and chemical additives, and the residue is also valuable. It can be used as feed additives and organic fertilizers, and can also be used to cultivate mushrooms, activate a series of industrial chains, revitalize industries such as medicine, health care, aquaculture and chemical beverages, and give play to the role of science and technology in promoting industrial development.

Extended data:

1. Larix olgensis is a deciduous tree of Larix of Pinaceae. Its leaves are scattered on long branches in a spiral shape, clustered on short branches, covered with needle-like stripes, and are 1~2.5 cm long. Monoecious, single cone, short branches at the top, red-purple cone when young, light brown or brown when mature. The bark is brown and contains tannin.

2. Pine bark extract is widely used as food additives and health products for sale or export, and drugs developed with pine bark extract have been listed abroad. Pharmacological activity research shows that pine bark extract has a wide range of biological activities in antioxidant, free radical scavenging, anti-tumor, cardiovascular protection and microcirculation improvement.

3. Larix olgensis distributed in Changbai Mountain area of Jilin, China and Mudanjiang River Basin of Heilongjiang. Its bark is often treated as waste in forest farms. Prior to this, there was no systematic report on the chemical constituents of Pinus sylvestris var. mongolica bark. Therefore, it is necessary to systematically and deeply study the chemical constituents of Pinus sylvestris var. mongolica bark from the perspective of basic research and application development in order to find its active components.

References:

Baidu encyclopedia-pine tree

The composition about pine trees thrives everywhere, regardless of the cold and heat.

It needs neither fertilization nor irrigation.

The wind can't blow it, the flood can't drown it, the cold can't freeze it, and the drought can't destroy it.

It becomes carefree.

Pine trees have strong vitality! Pine trees require less people! This is one of the reasons why I feel respect every time I see a pine tree.

"I think people are also, not seeking fame, but seeking contribution.

Life is not earth-shattering, but it is not mediocre.

Diligent but modest, as Edison said, "If I see far, it is because I stand on the shoulders of giants.

"I think a person with the virtue of pine trees, even Confucius, should say," This person is benevolent.

"come on At the same time, people with this virtue are also valuable! ( ...

Some people like roses because they are graceful, while others like peonies because they are noble and elegant. Others like lotus flowers because they are muddy and not dirty, and pine trees write 500 words.

But I'm different. I only like ordinary pine trees.

From a distance, pine trees are tall and green, and their roots are deeply embedded in the ground, indomitable. The root of the tree is straight and upright, standing there motionless like a well-trained soldier. Looking up, there are many leaves and a breeze blowing, just like clouds in the sky.

When you look closer, it turns out that the bark of the pine tree is uneven, just like being carved by a knife.

The stem is dark brown, slightly thicker at the top and thinner at the bottom. Leaves are not one by one, but one by one. I feel a little pricked, commonly known as pine needles.

In "Jiuyang Zhen Jing", it is still a hidden weapon! Pine, plum and bamboo are also called the three friends of the old cold.

Indeed, pine is a highly adaptable plant, and can even survive in the extremely harsh environment of MINUS 90 degrees.

No wonder Fan Yun, a poet in the Song Dynasty, once said: Cold ling knows strength, but negative snow sees festival.

Besides, pine trees are full of treasures.

Its trunk can be used to make good furniture and paper! Its leaves can be used to make tea and have many functions. It can treat diabetes, hypertension, polio ... and protect health.

Pine trees have no moral, which means that no matter how bullied, they should always stand upright, so pine trees are my favorite plants.

Grade 5, Dabei Street Primary School, Dongpo District, Meishan City, Sichuan Province: Wang Hongru ...

One of my favorite plants is the composition of pine trees. There are countless plants in this world, among which pine is my favorite. Its indomitable spirit is worth learning.

There stands a weather-beaten old pine tree in front of my house.

Its leafy, storm can't wash away its blue.

It is like a conscientious bodyguard, guarding the whole community.

Grandpa Chen Yi wrote a poem: "The heavy snow makes it loose, and the pine is tall and straight.

You should know that pine trees are noble and noble before melting.

"This poem is not bad at all.

In the cold winter, the north wind roared and the sky was still snowing heavily. The leaves on many trees have withered, but the needles of pine trees are still so green.

Heavy snow has fallen on many trees, and the branches have been bent or even broken. The pine tree is like a tenacious giant, standing there with its head held high and not bowing to the heavy snow.

It is because of it that I become strong.

I remember once, I learned roller skating. At first, I almost took a step and fell down. My feet are black and blue, and the scars left by the worst fall are still there.

At that time, I fell and stopped learning until I saw the old pine tree in front of my house. It has experienced so many ups and downs, cold and summer, but it still grows tenaciously. Isn't that what skating needs? So, I got up again and practiced hard. How many times have I fallen and got up again? One day I can't do it, and I will continue to practice the next day ... After I practice again and again, my skating skills have reached the perfect level.

I learned a lot from pine trees. When you encounter difficulties, you must learn from pine trees and you will succeed! ...

Write a character composition of "Song Qing" in about 500 words. Song Qing: Everyone says flowers are beautiful, but I like pine trees.

In autumn, flowers wither, grass withers, and many trees lose their leaves. However, pine trees stretch their branches and leaves in the autumn wind and autumn rain. Its leaves are like long dark green needles, and its skin is like pieces of tape interlaced on the trunk.

Bundles of needle-shaped leaves are swaying in the autumn wind, as if to say, "Not afraid of the wind.

"In the cold winter, the goose feather and snow are flying in the air, and the cold wind is blowing the whistle and shaking the pine trees violently.

Large tracts of snowflakes are pressed on the pine trees, and the branches are covered with thick snow.

Both snow and wind want to conquer pine trees, and pine trees have defeated snow and wind again and again with their tenacious perseverance and cold tolerance, waiting for the arrival of spring.

Spring has come, and the misty spring rain feeds everything like milk.

The pine trees also blossomed under the nourishment of the spring rain.

A yellow flower grows on the branch, facing the warm spring breeze, smiling, smiling ... As long as you touch the branch with your hand, the yellow-green pollen falls like smoke, and the warm spring breeze slowly drifts away.

I love pine trees, and I love their meticulous dedication.

The trunk of pine trees is not only wood, but also can be used; The leaves of pine trees can extract volatile oil; The fat liquid of pine trees can be used as turpentine; The fuel of its branches and roots can be used as torches to illuminate people's way forward.

In summer, it will open a big umbrella for people to enjoy the cool ... the pine flower is so beautiful and fragrant that even if it is smashed into pieces, human beings have no complaints.

I looked at a row of pine trees in the distance and silently thought: I also want to be an irresistible person, as tenacious and brave as a pine tree, and to be a person who has worked for the motherland all my life.

Pine trees are not as beautiful as peach trees in spring, nor as huge as sycamore leaves in summer, nor are ginkgo trees in autumn covered with golden coats.

Just a pine tree in a simple green coat in winter.

The leaves of pine trees spread out in clusters like needles, and each piece is sharp and powerful, as if supported by gods.

The fruit of pine trees is also very distinctive: it is oval and divided into layers of petals.

The fruit is hidden in the home made of "straw", just like the soldier who protects the house, the umbrella and the canopy of the wind and rain.

Or the kind of belief that relies on force to support and protect the fruits.

Peach trees show their full strength through peach blossoms in spring, while Chinese parasol leaves all hope in summer: Ginkgo trees show its beauty with golden butterflies in autumn.

And pine trees just stand guard for us in obscurity in winter.

In winter, when we see all the bare trees, we feel sad and sad.

If we see a pine tree among many bare trees, we will be full of hope.

Pine trees are straight, and no matter how bad the environment is, they still grow towering.

The branches of other trees are beautiful, but their integrity, simplicity and firmness are beautiful.

This inner beauty is much more noble than the superficial beauty and the precious tree species pampered in the greenhouse.

People, like trees, are much greater than flowers growing in a "greenhouse" in order to become strong people with inner qualities like pine trees.

So we should learn many intrinsic qualities of pine trees, such as integrity, simplicity and firmness, and be a noble person. Since ancient times, many people have praised the pine tree as a lofty symbol, and I have always admired it.

You see, no matter whether he is in the gap of a cliff or on solid land, as long as he has a seed-whether you planted it on purpose or dropped it at will, whether it was blown by the wind or dropped from the bird's mouth, in short, as long as he has a seed, no matter what the terrain is, whether it is cold or hot, he will thrive anywhere, and it needs neither fertilization nor irrigation. Pine trees Some people praise the graceful willows, others praise the evergreen holly, but I love cedar, the guardian of our school.

As soon as you enter the school gate, you can see the row of vigorous and tall pine trees in front of the teaching building.

Approaching the cedar, the thick trunk is straight up and the bark is rough. The teacher told us: "Although it looks like this, the wood is actually very hard.

Every two or three inches, a branch grows on the trunk, slowly descending around, but stubbornly standing up. There are many branchlets on the branches, and there are pine needles about an inch on them. This is the leaf of cedar. Many leaves are connected together, like a brush, and pine needles will prick people. If you are accidentally stabbed by it, you will scream with pain. This may be cedar. Cedar is shaped like a green "small pagoda". They look like "soldiers" and guard our school day and night.

In spring, cedars are full of vitality, and birds join in the fun. They are so happy and cheerful. In calling friends, trees are a good place for them to settle down, which has become a beautiful scenery of the school. In summer, long and sharp pine needles shine with spicy sunshine.

On the physical education class, students chase and play in the vicious sunshine. When you are tired of playing, hide under the cedar, not to mention how cool it is. Looking up, the sun was shining directly. Autumn comes and winter comes, and the north wind whistles.

There are only bare trunks on the surrounding trees, and only our "guards" are still standing on the playground against the cold wind, blocking the cold wind for the students and letting them study in the classroom with peace of mind! This is the cedar of our school, and we are determined to protect this loyal "guardian" at all times, so that it can flourish and add luster to us! Pine trees People say that flowers are beautiful and charming, but I want to praise the indomitable pine trees.

In autumn, the grass withered, the flowers withered, and many trees lost their leaves, but the pine trees still stretched their branches and leaves in the autumn wind and autumn rain.

Bundles of needle-like leaves are swaying in the autumn wind.

In the cold winter, goose feathers and heavy snow fly like butterflies in the air.

The cold wind roared and shook the pine tree violently.

Pine trees have overcome storms and blizzards again and again with tenacious perseverance, waiting for the arrival of spring.

Spring has come, spring rain feeds everything like milk, and pine trees have blossomed under the nurturing of spring rain. One after another, the yellow flowers danced happily against the spring breeze and laughed in the spring rain.

I love pine trees, and I love their selfless dedication.

The trunk and branches of pine trees are good wood and can be used to make paper; The fat liquid of pine trees can be used as rosin and turpentine ... Although pine trees do not have the fragrance of Chinese rose flowers, the magnificence of peony flowers and the exquisiteness of osmanthus, even if they are smashed to pieces, they have no complaints about human beings.

Ah! I love that pine tree that is unyielding in the face of the wind and snow, and I love its selfless dedication!

The 400-word fruit is hidden in the house set up by straw. It has no peach trees in spring, no huge leaves of buttonwood trees in summer, and no golden coat of ginkgo trees in autumn. No matter how bad the environment is, it is much bigger than the flowers growing in the greenhouse: Ginkgo trees show their beauty with golden butterflies in autumn.

And pine trees just stand guard for us in obscurity in winter.

In winter, when we see all the bare trees, we feel sad and sad. Indus leaves all hope in summer, and its fat leaves are sharp and powerful, as if there is a spirit supporting them.

The fruit of pine trees is also very distinctive.

Peach trees show all their strength through peach blossoms in spring. They are simple and strong, just like soldiers protecting houses, umbrellas and awnings from wind and rain.

Still that belief, it (the door) is supported by that kind of power: it is an oval, divided into layers of petals.

This inner beauty is much more noble than the superficial beauty and the precious tree species pampered in the greenhouse. Be a noble person.

Therefore, we should learn the integrity and simplicity of pine trees to protect the fruits.

Just a pine tree in a simple green coat in winter.

The leaves of pine trees stretch into clusters like needles.

People, like trees, still stand tall and grow.

The branches of other trees are beautiful, but they are upright.

If we see a pine tree among many bare trees, we will be full of hope.

Pine trees are straight and strong, so be a person with strong inner qualities like pine trees. ...

Composition: Association of pine trees, about 500 words. Pine trees are best written by themselves, representing the spirit of being strong and unyielding and not afraid of difficulties. It is lonely, simple, simple and not afraid of cold.

Evergreen all the year round, he is a real strong man, symbolizing loyalty with pine and cypress.

Pine branches stand proudly, cypress trees are solemn and solemn, evergreen all the year round, and survive the severe winter.

"The Analects of Confucius" praises: When the cold comes and the summer goes, you will know that the pine and cypress are withered.

Pine trees and bamboo plums are called "three friends of the old cold".

In literary and artistic works, pine and cypress are often used to symbolize unyielding heroism.

It can also represent eternal life and a symbol of longevity.

There are many phenomena in nature that inspire us. A pine tree growing on a cliff is deeply imprinted in my mind and inspires me in my life.

During the Spring Festival this year, my family went to Qianzengfeng, a mountain near the countryside.

Just like its name, this mountain is really layered and stands tall.

Halfway up the mountain, I panted and rested on a big stone.

I looked around and gasped. What a steep mountain! Looking up, I saw a small pine tree about 25 cm high on the cliff overhead.

I know that pine trees have always been famous for their tenacious vitality, but this little pine tree should have grown on fertile soil full of sunshine. However, the small pine tree in front of us grows on the cliff, surrounded by hard stones.

Imagine how bad the living environment is when a seed falls into a stone. However, it still germinated tenaciously and grew up slowly, and the trunk stood upright along the tiny gap. Finally, it stands on the steep wall of dangerous rocks, and won its own living space without fear of wind and rain or cold and heat! The tenacious vitality of the little pine tree strongly shocked me.

I think: this pine tree will certainly continue to grow in the face of sunshine, become stronger and more upright, and persevere in the face of difficulties and pressures. Isn't this spirit worthy of our admiration and consideration? ...

Everyone says flowers are beautiful, but I love pine trees.

(Shucun. In autumn, the flowers wither, the grass withers, and many trees lose all their leaves, but the pine trees stretch their branches and leaves in the autumn wind and autumn rain.

Bundles of needle-shaped leaves sway in the autumn wind, as if to say, "We are not afraid of the wind.

"In the cold winter, the goose feather and snow are flying in the air, and the cold wind is whistling, shaking the pine trees violently.

However, pine trees, with their tenacious perseverance and cold resistance, have overcome storms again and again, waiting for the arrival of spring.

Spring has come, misty spring rain feeds everything like milk, and pine trees bloom under the nurturing of spring rain.

Yellow flowers are blooming on the branches, smiling in the warm spring breeze ... I love pine trees and I love their selfless dedication.

The trunk of pine trees is good wood, which can be used to make paper; The leaves of pine trees can extract volatile oil; The fat liquid of pine trees can be used as rosin and turpentine; Its branches and roots are also good fuel.

In summer, it opens a big green umbrella for people to enjoy the cool; At night, its branches and roots can be made into torches to illuminate people's way forward ... Although pine trees are not as beautiful and fragrant as flowers, they have no complaints for human beings even if they are smashed into pieces.

...

In spring, peach trees compete with flowers.

In summer, the phoenix tree waves its huge leaves.

In autumn, ginkgo trees are covered with a golden coat.

Only thick and straight pine trees are covered with simple green coats all year round.

Its trunk is so vigorous. Listen, the bark is as rough as an old man's face.

Moreover, its branches are spread out.

The roots of pine trees often drill out of the ground.

Lying on the plate, like a dragon and clear water, like a snake dancing, and like the hand of an old man, looks pale and powerful.

Pine leaves like to grow at the top of pine trees

Pine leaves are strange, like slender needles.

These green pine needles gather together to form a bunch of pine leaves.

Its fruit is very distinctive, all oval, divided into small petals like petals, which is very interesting.

I have a long-standing respect for pine trees.

The vitality of pine trees is very tenacious.

You see, he only needs one seed, whether it is between cliffs or on barren land.

This seed was planted on purpose, dropped at will, blown by the wind, and fell out of the bird's mouth.

In short, as long as there is a seed, no matter what the terrain, it will thrive anywhere, not afraid of the blow of cold and heat. It needs neither fertilization nor irrigation. The wind can't blow it, the flood can't drown it, the cold can't drown it, and the drought can't destroy it.

What a tenacious vitality this is! This is one of the reasons why I respect him.

There is another important reason for my respect for pine trees.

This is his spirit of self-sacrifice.

Pine is an important raw material for papermaking. Volatile oil can be extracted from leaves, and rosin and turpentine can be made from fat liquid. It is a very important industrial raw material, and the rhizome is also a good fuel.

Pine trees demand less and give more.

Isn't this spirit of selfless dedication valuable? ...

Please indicate the source? Function of pine trees