National second-class key protected wild plants (approved by the State Council 1999)
Cinnamomum camphora is an evergreen tree of Lauraceae, 55 meters high and hundreds of years old. It can be a towering old tree and an excellent landscaping tree. When young, the bark is green and smooth, and gradually becomes yellowish brown or grayish brown longitudinal crack when old; Winter buds are oval. The leaves are thin leathery, ovoid or elliptic-ovoid, 5 5- 10/0cm long and 3.5-5.5cm wide, with short tip or near tail tip, rounded base, three veins from the base, the first or second pair of lateral veins near the base are long and protruding, the back is slightly covered with white powder, and there are glandular points in the axils of the veins. Panicles are born in the axils of new branches. Flowers are yellow-green, open in spring, and panicles are small and numerous. The fruit is spherical and purple-black when it is ripe. The flowering period is from April to June, and the fruiting period is10-165438+10. Because there are many lines on the wood of camphor tree, it seems to be full of articles, so a wooden word is added next to the word "Zhang" as the name of the tree, which is called "camphor tree".
The main producing areas mainly grow in sunny slopes, valleys and river banks with fertile subtropical soil; It is distributed in the south and southwest of the Yangtze River, and its growth area can reach 1000 meters above sea level, especially in Yibin, Sichuan. In 2006, Cinnamomum camphora was elected as the "city tree" in Yibin, enjoying the reputation of "city tree" in Yibin and becoming the main forest tree in Yibin. Under the vigorous advocacy of the government, Yibin has formed a large number of artificial camphor tree forest farms, among which Gangping Forest Farm in Yibin County is the most successful, which has made great contributions to beautifying the natural environment and increasing people's economic income!
Features [3] A new wave of leaves grows, and the whole canopy is green, sunny and dazzling, which is very attractive. In addition, the body is strong and straight, which makes people feel refreshed at first glance. If you look closely, you will find it is blooming. The flowers are as small as millet, light green, slippery and hidden. Scenery of camphor tree
Fold and edit the origin of this section.
The main producing areas of Cinnamomum camphora are Taiwan Province, Sichuan, Fujian, Jiangxi, Guangdong, Guangxi, Hunan, Hubei, Yunnan, Zhejiang and other provinces (regions), especially Hunan. Yiyang, Hunan Province is known as "Cinnamomum camphora Capital of China". Most areas in Yiyang are engaged in Cinnamomum camphora seedling planting industry, which has promoted the prosperity and development of Yiyang. Yiyang, Hunan Province has decades of experience in clustering. With the strong support of the forestry department, the whole region began to plant trees.
Fold edit this paragraph function utility
This species is an important timber and special economic tree species in subtropical area (southwest of China). Camphor and camphor oil can be extracted from roots, trees, branches and leaves. The main components of oil are camphor, terpenoid bicyclic hydrocarbons, camphene, limonene and eugenol. Camphor is used in medicine, plastics, explosives, antisepsis and pesticides, and camphor oil can be used as raw materials for pesticides, mineral processing, soap making, fake paint and essence. Dense branches and leaves, beautiful trees, can be used as green street trees and windbreaks; Wood is of excellent quality, insect-resistant and moisture-proof, and can be used in construction, shipbuilding, furniture, cabinets, plates, sculpture and so on. Besides being used for extracting camphor, or being cultivated as street trees and landscape trees, camphor also has the effects of strengthening the heart, relieving fever and killing insects. If you go outdoors in summer, you can try: pick the leaves of camphor tree, crush them and apply them on the surfaces of hands and feet, which has the effect of preventing mosquitoes. According to scientists' research, chemicals such as terpenoids such as bicyclic hydrocarbons, camphenes, limonene and eugenol emitted by camphor trees have the ability to purify toxic air, have the functions of preventing cancer and insects, and filter out fresh and clean air, which makes people feel refreshed. Living in an environment with camphor trees for a long time will avoid suffering from many incurable diseases. Therefore, Cinnamomum camphora has become the first choice for landscaping in many cities and regions in the south, and is favored by the landscaping industry.
Fold and edit the relevant information in this paragraph.
Accustomed to camphor trees like light, slightly resistant to shade; I like warm and humid climate, and my cold tolerance is not strong. I am not strict with the soil, and I am more resistant to water and humidity, but I am not resistant to drought, barren and saline-alkali. The taproot is developed and deep, and can resist wind. Strong germination and pruning resistance. The growth rate is moderate, and the tree shape is huge like an umbrella, which can provide shade and keep out the cold. It has a long survival period, can grow into a towering ancient tree for hundreds of years, and has a strong ability to smoke and dust, conserve water, fix soil and prevent sand, and beautify the environment! In addition, it can resist tidal wind, smoke and toxic gases, and can absorb a variety of toxic gases, which is more suitable for urban environment.
Garden application This tree species has dense branches and leaves, large crown, strong shade and magnificent posture. It can eliminate smoke and dust, keep water, fix soil and prevent sand, and beautify the environment. It is an excellent tree species for urban greening and is widely used as shade trees, street trees, shelter forests and scenic forests. Chi Pan, waterside, hillside and other places. Cluster planting, group planting, solitary planting or as a grassland background tree. Breeding methods: sowing and cutting.
In landscaping, camphor trees can be seen in many cities and regarded as city trees in many areas. For example: Changsha, Yibin, Hangzhou, Yiwu and other places. Cinnamomum camphora [1] has three forms in greening: full crown camphor tree, skeleton camphor tree and cut camphor tree. The survival rate of skeleton camphor tree and cutting camphor tree is higher than that of full crown camphor tree. Cinnamomum camphora is generally primitive and distributed in mountainous areas. If transplanted, it may cause acclimatization, high purchase cost and low survival rate. Unless it is a high-end greening project or requires quick greening effect, camphor trees with full crowns are generally not used. Trunking camphor trees means cutting off branches and leaving only the trunk. The greening effect is slow, and it will take two or three years to grow the crown, but the price is much lower than that of the full crown camphor tree. However, the greening effect of skeleton Cinnamomum camphora is between full crown and stem cutting, because although it also cuts branches, it retains several main branches of Cinnamomum camphora, and the greening effect is faster than stem cutting. Therefore, different forms of camphor trees can be selected according to different requirements in greening.
The adaptive altitude of Cinnamomum camphora is below 1800m, and the absolute minimum temperature is -0.00℃
Light reaction: like light.
Water reaction: I like humidity.
Adaptability to special soil conditions: barren resistance, saline-alkali resistance.
Types of air pollution: many.
Topographic conditions: hills and plains.
Soil type: sandy loam
Distribution of Tree Species: Zhejiang, Fujian, Jiangxi, Taiwan Province, Hubei, Hunan, Guangdong, Yunnan and Anhui.
Flowering: early April-May, early summer, yellow-green, panicle.
Date of fruiting: early August ~165438+1October.
Tree height: up to 55 meters.
Annual growth of tree height: 100cm
Annual growth rate of DBH: 2.40cm.
Propagation method: seed propagation
[There are two very big camphor trees in Liaoju Village, Guizhou]
In Liaoju Village, Guanzhou Town, Yanhe County, there is a thousand-year-old tree-Cinnamomum camphora with a history of 1000 years. It is 4 meters in diameter and needs 6 adults to join hands to enclose it. The ground area exceeds 1 1,000 square meters. Cinnamomum camphora is evergreen all year round and looks like a big umbrella from a distance. According to local villagers' records, the tree still grows at the rate of 1-2 cm per year. It is said that the reason why Cinnamomum camphora can grow so luxuriantly is that its roots have penetrated several kilometers and even extended to Wujiang River, a few kilometers away from the village. Because it grows in pigsty and fields near the village, all the nutrition comes from farmers.
Zhang Xiang Village is also called "sacred tree" by local people, and it has been a place for people to pray since ancient times! It is said that if the child cries at night, as long as the adults take the child to worship the tree and burn two notes of incense and money paper, the child will stop crying. It is accurate! Red strips of cloth are often hung on trees. Hundreds of years have passed since the village was built, and now it has become a village with four or five hundred households and thousands of people.
Cinnamomum camphora is not only a "sacred tree" for villagers, but also a paradise for birds! Insects grew on the tree, and the woodpecker treated it, leaving a hole, which happened to be the nest of myna. Every summer, the trees will chirp and be very lively. Children are often attracted to hang from branches hanging on the ground with ropes and climb up trees to get eggs and birds. In autumn, the leaves of Cinnamomum camphora fall, and the children sweep the leaves in piles to keep warm. According to the certification of relevant departments, this tree is the largest camphor tree in Asia at present. There is also a sister tree in our village, which is about as thick as three people hugging each other, so these two trees are called sister trees, and the distance between them is only 1 km.
Transplantation technology of folding editing segment
In order to ensure the survival rate of planting, the following problems should be paid attention to in the process of planting and corresponding technical measures should be taken.
Planting time
Planting should be timely, that is, the trimmed camphor tree seedlings should be planted immediately. If the transportation distance is far away, the root pile should be wrapped with wet grass and plastic film to keep it moist. The best planting time is before 1 1 am or after 16 pm. In winter, just avoid the coldest days.
plant
Planting holes shall be excavated according to general technical regulations. Base fertilizer should be applied at the bottom of the hole, and a fine soil cushion should be laid. Planting soil should be loose and fertile. Remove the topdressing of camphor tree seedlings, pay attention to planting seedlings in the planting hole (pay attention to the ornamental surface of the tree), then fill the soil and insert it, and continue to fill the top of the hole. Finally, make a cofferdam around the seedlings to stop water.
water
After planting camphor seedlings, water them immediately. For camphor tree seedlings with soil balls, stir the soil around the tree hole with iron bars or wooden sticks to fill it with water. Be careful not to damage the earth cofferdam when injecting water. The earth cofferdam should be filled with water, so that the water can slowly soak the planting holes. In order to further improve the survival rate of colonization, auxin can be added to the irrigated water to stimulate the growth of new roots. In general, naphthylacetic acid is used as auxin. Firstly, powdered naiacetic acid was dissolved in a small amount of alcohol, and then mixed with clean water to make irrigation solution with a concentration of 200PPm, which was used as the first root-fixing water for irrigation.
Special technical treatment
In the process of transplanting, in order to keep the humidity of camphor tree trunk and reduce the transpiration of bark water, the trunk should be soaked with straw rope and wrapped to the top of the trunk, and if the branches are large, they should be wrapped. Then, the prepared clay mud is thickly covered on the trunk wrapped with straw rope. In the future, you can often spray water on the trunk with a sprayer to keep it moist. After the big camphor tree is dug out, it is necessary to trim the broken roots, broken roots and dead roots, and then soak the roots with clay mud after cutting; If 0.03% sodium acetate auxin is added to the mud, it can promote the growth of new roots of Cinnamomum camphora after transplanting.
Management and maintenance
Because camphor trees are planted out of season, it is necessary to strengthen maintenance and management after planting camphor trees. Pay attention to watering at ordinary times, and master the principle of "don't dry it, water it thoroughly"; It is also necessary to spray clean water on the ground and camphor leaves regularly to increase air humidity and reduce plant transpiration.
First, the choice of nursery land
Choose a clean and open area with flat terrain, leeward and sunny, good drainage, sufficient water and low groundwater level as nursery land. Generally, a gentle slope of 2-5 degrees is better. Deep ditches must be dug in the flat ground to drain water and reduce groundwater. The soil should be sandy loam or loam with deep soil layer and rich organic matter. Before freezing in early winter, the first ploughing should be carried out to accelerate ripening, and the ploughing should not be too deep to control the overgrowth of main roots and promote the growth of lateral roots. Apply sufficient base fertilizer, usually farmyard manure, before sowing.
Second, the collection and storage of seeds.
1 1 In the middle and late June, when the Cinnamomum camphora berries are purple-black, the fruits are harvested from the mother trees that are robust and free from pests and diseases. Recovered berries should be treated in time to prevent deterioration. That is, put the fruit in a container or pile it up and add water to soften the pulp. Wash it with clear water and take out the seeds. Scatter the seeds thinly in a cool and ventilated place to dry, and then carefully select them, so that the purity of the seeds can reach over 95%.
Third, sow.
Cinnamomum camphora can be sown in autumn or spring, and spring sowing is better. Autumn sowing can be sowed with sowing, before the soil freezes in late autumn. Spring sowing should be carried out after the soil thaws in early spring. Before sowing, the seeds should be soaked in 0. 1% bromogeramine solution for 3-4 hours for sterilization and disinfection. The seeds can germinate 10- 15 days in advance by accelerating germination with warm water of 50 degrees, keeping the water temperature and soaking the seeds for 3-4 times repeatedly. The planting spacing of Cinnamomum camphora is 25-30 cm, the ditch is about 2 cm deep and 5-6 cm wide, and 40-50 seeds can be planted per meter ditch, and the sowing amount per mu is about 15 kg. [2]
Fourth, tending management.
1, seedling management: after the seedlings are unearthed, remove the plastic film in time to avoid yellowing of the seedlings. When the seedlings grow 2-3 true leaves, carry out thinning. To achieve early seedling spacing, staged seedling spacing, timely seedling spacing, seedling spacing of about 7 cm. Intermittent strong seedlings should be planted separately to save seeds and improve the emergence rate. Pay attention to shading and water conservation after planting to ensure survival.
2. Timely transplanting: the annual Cinnamomum camphora seedlings are about 60 cm high, the root diameter is about 0.8 cm, and the seedling yield is about 25,000 plants per mu. Except for afforestation, the annual camphor tree seedlings can not meet the standard of urban greening seedlings, and must be cultivated for 3-6 years after transplantation.
Fold and edit this section disease protection
Etiology: Yellowing disease is a physiological disease of Cinnamomum camphora itself, also known as yellowing disease. There are many causes of verticillium wilt, and the most common one is iron deficiency verticillium wilt. Because Cinnamomum camphora likes acidic soil, long-term growth in alkaline soil will affect the absorption of iron and other elements by roots. According to the observation, Cinnamomum camphora chlorosis generally manifested as yellowing and thinning of leaves, and milky white spots appeared on the surface of leaves. In severe cases, the leaves will turn yellow and necrotic. We should pay more attention to conservation and management, so as to avoid the occurrence of yellowing disease caused by other factors.
Prevention and control: after Cinnamomum camphora yellowing, more organic fertilizer should be applied to improve the surrounding soil environment and make it better absorb iron. Apply some sulfur powder in the soil, punch holes around the roots and pour in the ferrous sulfate solution of 1: 30, inject the mixed solution of 15g ferrous acid, 50g urea, 5g magnesium sulfate and 1000ml water into the trunk, and spray 0. 1-0.2% on the leaves.
Under normal circumstances, there is no need to use drugs after iron deficiency and chlorosis, as long as cultivation and maintenance management are strengthened.
Collapse the section of editing big tree transplantation.
1. Preparation before transplanting: Generally speaking, big trees can be transplanted in winter, autumn and spring, but early spring is the best time to transplant big saplings. Early spring saplings are in a dormant period before germination, and their response to the external environment is relatively slow. The temperature warms up after transplanting, which happens to be the growing season of trees, and the survival rate is high. After the growth from early spring to late autumn, the injured part of the tree has recovered when transplanted, creating conditions for its smooth wintering. Big saplings require straight trunk, healthy growth, no pests and diseases, full crown, new buds, new shoots and new branches on the trunk, strong regeneration ability, and the age of the tree should be around 10a, which is convenient for transportation and has high transplant survival rate. It is better for local saplings. Easy-talking tree species are: Sophora japonica, poplar, willow, ginkgo, cedar and so on. Tree species that are not easy to survive are: Sabina vulgaris, Platycladus orientalis, spruce and so on. Preparing soil balls before transplanting is one of the most important tasks. Trees are dormant in winter and early spring, and can be transplanted without soil balls, but evergreen trees, tree species that are not resistant to transplantation and seedlings that are difficult to judge whether tree species germinate are best to carry soil balls. When picking up the soil ball, first remove the floating soil around the soil ball, draw a round net with the trunk as the center, generally dig 20cm down and then dig sideways until it reaches the required height. In the process of soil ball, if you encounter a big tree root, try to cut off the tree root with pruning shears, and don't use tools to cut it off, so as to avoid soil ball scattering. The size of the soil ball is generally 8 ~ 10 times of the DBH, and then the soil ball is slowly trimmed and wrapped with straw rope. During the whole transplantation process, the soil ball must remain intact. The trunk of big saplings should also be wrapped, which can be wrapped with straw rope, plastic film and other materials. This can play the role of heat preservation, prevent excessive transpiration and prevent excessive water loss. The crown of the tree should be trimmed to a certain extent, and then white glue should be coated on the cut, and then wrapped [2].
2. Transportation of big saplings: The prepared saplings involve a transportation problem. First, trim and bind the crown of the big sapling, and then wrap the binding part with soft objects such as straw rope for protection to avoid damaging the sapling and soil ball during transportation. Then use a crane to hoist it into the car, the soil ball is close to the cab of the car, the crown of the big sapling faces backward, and it is supported by a bracket. The two sides of the soil ball are padded with soil or sand, and the soil ball is surrounded by ropes. She couldn't fit in the trunk during transportation. If it is transported to a far place, it is necessary to continuously spray water to prevent water loss.
3. Planting big saplings: Before transportation, it is necessary to make preparations for tree holes. It is not easy to plant tree holes too deep or too shallow, so it is advisable not to cross the soil ball by about 20cm. Too big or too deep tree holes will lead to tree sinking, and too shallow tree holes can't plant saplings well, both of which will easily lead to the death of saplings. The original packed straw rope can be released or put into the tree hole together. After the saplings are put into the tree holes, they will be supported by special personnel to avoid the trunk deviation when planting. The crown should face the main observation direction. When planting, first fill the tree hole with good soil, then fill the rest. If there are bricks, gravel and other soil, replace the soil in time. After planting, the trunk is the center, which is larger than the edge of the tree hole. The soldiers were tied up in piles and compacted to prevent water from falling. If big saplings cannot be planted in time, water should be sprayed 3 ~ 4 times a day before planting.
4. Post-plant maintenance: As the saying goes, there are three kinds of plants and seven kinds of plants, so post-plant maintenance is the most critical step in the whole process. The roots of big saplings will be seriously damaged during transplantation. In order to promote the recovery of root system, rooting powder can be used for root spraying treatment. Because of the damage of roots, the water absorption capacity of roots is greatly reduced, so it is very important to adhere to the water balance of trees. Water the big saplings for the first time immediately after planting, the second time after about 5 days, and the third time after 10d. Make sure to water them thoroughly. Due to the injury before planting, the newly transplanted seedlings have poor resistance and are easily eroded by pests and diseases. Therefore, early detection, early treatment, early prevention, and finding the disease must be the right medicine. In winter, the trunk is painted white or sprayed with stone sulfur mixture. Before the seedlings overwinter, they must be watered with enough winter water. When planting, the mound tied around the trunk should be pushed away and covered around the trunk. Straw ropes are also wrapped around the trunk and wrapped with plastic film, or steel frames are set up with steel pipes and wrapped with non-woven fabrics and plastic sheets to make plastic tents for heating. When transplanting big saplings, there will be differences due to many factors such as tree species, seasons and climate change. Therefore, I must use planting skills flexibly according to time, place and different trees in my practical work.
Seedling maintenance of folding editing this paragraph.
Folding shadow
Now approaching the high temperature season, the water evaporation of trees is relatively large. Excessive water loss will seriously affect the survival rate and growth potential of trees before the root system fully recovers its function. Shading is beneficial to reduce the temperature of trees and the surface, reduce the water loss of trees, improve the air humidity and improve the survival rate of trees. A shading net with shading rate of about 60-70% can be erected above the tree. At the same time, we should do a good job of covering the roots of trees with straw and other relatively ventilated covering materials to improve soil moisture.
Folding watering
When it doesn't rain for a few days, water it sooner or later. When watering, not only should the soil be thoroughly watered, but also the tree body and its wrap (such as straw rope wrapped around the trunk) should be wetted. However, in the soil with poor drainage, attention should be paid to controlling watering times to avoid root rot caused by excessive soil moisture.
Folding drainage
There are many natural disasters this season, such as typhoons. When there is water in the nursery, it should be drained in time to avoid root rot.
Tree support: Because the roots of trees transplanted in May have not recovered their soil-fixing support ability, they are easily blown down in strong winds (such as typhoons), thus affecting the recovery of root growth, so it is necessary to do a good job in supporting trees in time. The supporting material can be bamboo pole or iron wire. However, when supporting the tree, the bark should be well protected to avoid wire damage to the bark or even embedding into the tree, which will affect the survival of the upper tree.
Folding hormone washing
In order to restore the tree vigor as soon as possible, some growth-promoting hormones, such as ABT rooting powder, can be properly watered in the rhizosphere to promote the rapid growth of the root system.
Folding pruning
1 whole pruning of bare-rooted camphor tree seedlings
Before planting, the root system should be sorted out, and the main roots such as broken roots, withered roots, rotten roots and short roots without fine roots should be cut off, and the crown should also be trimmed. Generally, 1/3~ 1/2 of all branches and leaves should be cut off to greatly reduce the transpiration area of the crown.
Pruning Cinnamomum camphora seedlings with soil balls
Seedlings with soil balls need not be pruned at the roots, but only at the crown. When pruning, the branches and leaves of the crown 1/3~ 1/2 can be cut off to greatly reduce the water loss of the whole tree, but the basic tree shape should be maintained to speed up the landscaping and achieve the greening effect as soon as possible.
Cinnamomum camphora has many short branches and strong continuous fruiting ability. As long as the tree is in a normal state, it will bloom in large numbers every year. However, if the amount of flowers is too large, the load is too heavy, and there is excess nutrition in the tree, it will also show the consequences of the years. Therefore, it is necessary to remove excess flowers and fruits in time. However, Cinnamomum camphora has a short flowering period and a small female organ. Therefore, in terms of consumption, it is not the flowers that have become thinner, but the fruits that have become thinner. But Cinnamomum camphora is tall, and it is difficult to dilute flowers and fruits. So some places try to dilute flowers and fruits with chemicals.
The medicinal value of folding editing this paragraph
Cinnamomum camphora bark is medicinal;
Zhangshupi
Efficacy and qi.
Skillfully using camphor tree bark powder to treat lower extremity ulcer.
Scrape a proper amount of fresh camphor tree bark, dry it, grind it into fine powder, sieve it with 80 ~ 100 mesh, and bottle it for later use.
First, clean the sore surface with 3% hydrogen peroxide to remove rotten tissue. Then take a proper amount of camphor tree bark powder and vitamin AD pill oil, apply it to the ulcer surface, and then lightly tie it with gauze or bandage. Change the dressing every day 1 time, generally 15 ~ 25 days.
Medicinal use of camphor tree fruit;
The source is the fruit of Cinnamomum camphora of Lauraceae, and the plant morphology is detailed in the camphor tree strips.
Harvest in autumn and dry in the shade.
Slightly spicy in nature; Warm.
Indications-the efficacy of camphor tree fruit in relieving exterior syndrome and reducing fever. Treat high fever, cold, measles, whooping cough and dysentery.
Prescription 1 for high fever, cold and measles: one or two camphor fruits. After grinding, take it with boiling water.
Medicinal uses of camphor tree roots;
Fragrant with different names, camphor tree root, agarwood, agarwood.
The source is the root of Cinnamomum camphora of Lauraceae.
Mining and excavation took place from February to April. Cleaning selenium, slicing, and drying.
The medicinal material is a transverse or oblique cutting disc with a diameter of 4 ~ 10 cm and a thickness of 2 ~ 5 mm ... It is hard and smells of camphor. It is best to be large, with even slices, yellow and white color and strong smell. Jiangxi, Sichuan, Guizhou, Guangdong, Hunan and Jiangsu.
Sexual taste "classified herbs": pungent, non-toxic.
Indications-the effect of camphor tree root is to regulate qi and promote blood circulation and dispel wind and dampness. Treat vomiting and diarrhea, chest pain, rheumatic joint pain, and traumatic injury.
① Classified drugs: for treating all kinds of gas pain, arthralgia, qi-shun, cholera and vomiting.
② Guizhou folk prescription drug collection: treating rheumatic pain and traumatic injury.
③ Guiyang folk herbs: regulating qi, promoting blood circulation and invigorating stomach. Treat stomach trouble, muscle pain and sweaty feet.
Fold and edit the planting and cultivation section.
(1). Preparation before transplanting: Generally speaking, big trees can be transplanted in winter, autumn and spring, but early spring is the best time to transplant big saplings. Early spring saplings are in dormancy before germination, and their response to the external environment is relatively slow. The temperature warms up after transplanting, which happens to be the growing season of trees, and the survival rate is high. After the growth from early spring to late autumn, the injured part of the tree has recovered when transplanted, creating conditions for its smooth wintering. Big saplings require straight trunk, healthy growth, no pests and diseases, full crown, new buds, new shoots and new branches on the trunk, strong regeneration ability, and the age of the tree should be around 10a, which is convenient for transportation and has high transplant survival rate. It is better for local saplings. Easy-talking tree species are: Sophora japonica, poplar, willow, ginkgo, cedar and so on. Tree species that are not easy to survive are: Sabina vulgaris, Platycladus orientalis, spruce and so on. Preparing soil balls before transplanting is one of the most important tasks. Trees are dormant in winter and early spring, and can be transplanted without soil balls, but evergreen trees, tree species that are not resistant to transplantation and seedlings that are difficult to judge whether tree species germinate are best to carry soil balls. When picking up the soil ball, first remove the floating soil around the soil ball, draw a round net with the trunk as the center, generally dig 20cm down and then dig sideways until it reaches the required height. In the process of soil ball, if you encounter a big tree root, try to cut off the tree root with pruning shears, and don't use tools to cut it off, so as to avoid soil ball scattering. The size of the soil ball is generally 8 ~ 10 times of the DBH, and then the soil ball is slowly trimmed and wrapped with straw rope. During the whole transplantation process, the soil ball must remain intact. The trunk of big saplings should also be wrapped, which can be wrapped with straw rope, plastic film and other materials. This can play the role of heat preservation, prevent excessive transpiration and prevent excessive water loss. The crown of the tree should be trimmed to a certain extent, and then white glue should be coated on the cut and wrapped.
(2) Transportation of big saplings: The prepared saplings involve a transportation problem. First, trim and bind the crown of the big sapling, and then wrap the binding part with soft objects such as straw rope for protection to avoid damaging the sapling and soil ball during transportation. Then use a crane to hoist it into the car, the soil ball is close to the cab of the car, the crown of the big sapling faces backward, and it is supported by a bracket. The two sides of the soil ball are padded with soil or sand, and the soil ball is surrounded by ropes. She couldn't fit in the trunk during transportation. If it is transported to a far place, it is necessary to continuously spray water to prevent water loss.
(3) Planting big saplings: Before transportation, tree holes should be prepared. Tree holes are not easy to be planted too deep or too shallow, so it is advisable not to cross the soil ball by about 20cm. Too big or too deep tree holes will lead to tree sinking, and too shallow tree holes can't plant saplings well, both of which will easily lead to the death of saplings. The original packed straw rope can be released or put into the tree hole together. After the saplings are put into the tree holes, they will be supported by special personnel to avoid the trunk deviation when planting. The crown should face the main observation direction. When planting, first fill the tree hole with good soil, then fill the rest. If there are bricks, gravel and other soil, replace the soil in time. After planting, the trunk is the center, which is larger than the edge of the tree hole. The soldiers were tied up in piles and compacted to prevent water from falling. If big saplings cannot be planted in time, water should be sprayed 3 ~ 4 times a day before planting.
(4) Post-plant maintenance: As the saying goes, there are three species and seven species, so post-plant maintenance is the most critical step in the whole process. The roots of big saplings will be seriously damaged during transplantation. In order to promote the recovery of root system, rooting powder can be used for root spraying treatment. Because of the damage of roots, the water absorption capacity of roots is greatly reduced, so it is very important to adhere to the water balance of trees. Water the big saplings for the first time immediately after planting, the second time after about 5 days, and the third time after 10d. Make sure to water them thoroughly. Because of the injury before planting, the newly transplanted seedlings have poor resistance and are easily eroded by pests and diseases. Therefore, early detection, early treatment, early prevention, and finding the disease must be the right medicine. In winter, the trunk is painted white or sprayed with stone sulfur mixture. Before the seedlings overwinter, they must be watered with enough winter water. When planting, the mound tied around the trunk should be pushed away and covered around the trunk. Straw ropes are also wrapped around the trunk and wrapped with plastic film, or steel frames are set up with steel pipes and wrapped with non-woven fabrics and plastic sheets to make plastic tents for heating. When transplanting big saplings, there will be differences due to many factors such as tree species, seasons and climate change. Therefore, I must use planting skills flexibly according to time, place and different trees in my practical work.
The characteristics of folding and editing this paragraph
1, Cinnamomum camphora can green the environment, beautify life and enjoy the cool in summer.
2. Cinnamomum camphora has the medicinal value of insect and moth prevention, mosquito repellent and detoxification.
3, strong cold resistance, fast growth, dust absorption, water retention and strong air pollution resistance.
This is a beautiful scenery. The long and thick leaves and dense leaves are bright green and evergreen all the year round.
5. Trees are beautiful and have a unique fragrance, so they are also one of the commonly used materials for furniture.
6. Camphor tree fruit can extract camphor for industrial use.
Hope to adopt