morphological character
Evergreen shrub, [1] up to 4m, with gray bark. Leaves sessile, densely planted at the top of the stem, thick papery, wide strip or oblanceolate, length10 ~ 35cm, width1~ 5.5cm, swollen stem base, narrow near the base, obvious prismatic midrib on the lower back, large terminal panicle, 60cm long,/10 ~ 35 flowers. These flowers are white and fragrant. Berries are spherical yellow. It belongs to many species and varieties and is used for garden viewing. Dragon's blood tree is loose in material, hollow in body and riddled with branches, so it can't be a pillar; When making a fire, it only smokes, but it doesn't catch fire, and it can't be used as firewood. It is really useless, so it is also called "mature tree". Plant habits: Dracaena likes high temperature and high humidity, with sufficient light and bright leaves. Not hardy, the winter temperature is about 15℃, and the lowest temperature is 5~ 10℃. When the temperature is too low, brown patches will appear at the tip and edge of leaves due to insufficient water absorption by roots. Dracaena likes loose, well-drained soil rich in humus.
Production standard of planting technology: 14cm pot, 50cm high, 40cm crown width, and the growth cycle is about 3 months. Substrate preparation: 5-40mm loose imported peat with good drainage and ventilation, add water and stir evenly, (standard of adding water: after adding water and stirring evenly, hold a handful of peat in your hand and water seeps through your fingers) and plant it in a cup. 14cm pot contains about 400 ml of peat, and a pack of 300 liters of imported peat can hold about 750 cups. Potting requirements: select high-quality seedlings produced professionally, with height of 25 cm, crown width of 20 cm, 4-6 leaves, no pests, no dead leaves and no yellow leaves. Pot filling: The reused old pot must be soaked in 1000 times potassium permanganate solution for more than half an hour, then washed with clear water and dried for later use. Small potted plants are usually planted in pots with a diameter of 14cm. When planting, put a substrate of about 3cm on the bottom of the cup, and then move the seedlings into the cup. Don't plant the seedlings too deep, and the base of the plant should be flat. The matrix has moderate elasticity and is filled to the cup for 9 minutes. [2] Propagation method After Dracaena dracunculata was introduced into China, except for a few tropical areas for seed cultivation, other areas mainly used high pressure, cutting and tissue culture for asexual propagation. Stratified propagation
The stems of Dracaena dracunculata mostly grow upright and have few branches. After several years of plant growth, the basal leaves fall off and naturally lose their ornamental value. According to this situation, captive breeders can breed under high pressure in the high temperature and high humidity season from May to July. The method is as follows: cut the appropriate part of the plant stem into a ring with the width of 1.8-2.2 cm, and peel off the cortex of the ring with a knife; Wipe off the juice overflowing from the incision with a clean wet cloth; Coating the cortex at the upper end of the incision with 5000- 1000ppm aqueous solution of naphthylacetic acid; Tie the white plastic film at the lower end of the incision, straighten it into a funnel shape, and put it in. After the high pressure of Dracaena, it is necessary to check whether the matrix is dry at any time and replenish water at any time. Generally, after 30 ~ 40 days of cultivation, new roots will appear in the girdling area, and from September to 10, they can leave the mother and be cultivated into independent plants. Cuttage propagation of Dracaena can also be used for asexual propagation, and the time is May-June. At this time, it is a dragon blood tree.
In the vigorous growth period, plants are rich in nutrition and easy to survive after cutting. Before cutting, you can choose the mother plant with high ornamental value and plant it for two years.
Strong branches on the tree, each about 10-20 cm long, with or without leaves. The base of the cuttings is cut into a flat mouth, and leaves are left after the upper part is crosscut. The upper and lower incisions can be soaked with clear water to wash the spilled juice, then placed in a cool and ventilated place for a while, and then the base of the cuttings is soaked with 500- 1000ppm of naphthylacetic acid for 2-3 cm, usually for 5 seconds, and the cuttings are inserted with the immersion. For the cuttage of Dracaena dracunculata, the seedbed can be a small pottery flowerpot, and the substrate can be vermiculite, perlite or high-temperature sterilized plain sand, which can be put into the pot for cuttage. One plant in each pot, water it once after it is inserted, and put the seedbed in a place where flowers are shining and carefully maintain it. The future management work is mainly to keep the substrate moist. The wound of Dracaena Dracaena heals quickly, takes root early and germinates quickly. It usually takes 15 to 20 days. Under the action of trauma hormone, the incision will produce callus. In 25 ~ 35 days, the cuttings will soon have original roots under the action of endogenous hormones, and new roots will germinate in 35 ~ 40 days. After two months, they can be transplanted into cultivated soil. Cultivation and maintenance cultivation and maintenance
1 serving humus soil, peat soil and river sand can be used as mixed substrates and cultivated under 70~80% shading conditions. Apply compound fertilizer 1~2 times a month during the growing period, keep the soil moist, and spray more leaves in summer to improve the air humidity, so that the leaves will be thicker, brighter and less prone to drying. In winter, it is necessary to keep the temperature above 8℃, and the soil in the basin should be watered less, but it is effective to keep the color of leaves and prevent dry tips by wetting the ground frequently and increasing humidity. This plant has beautiful leaves and is a good material for all kinds of indoor decoration. If the humidity can be properly reduced before entering the room to adapt to the dry environment, and water is often sprayed on the leaves after entering the room, you can enjoy it indoors for a long time and it is not easy to dry the leaves. Some plants damaged by indoor decoration can be recovered as long as they are moved back to the production site for a period of time if the damage is not serious, while some seriously damaged plants are difficult to recover and can be used for seedling propagation; Like the dragon's blood tree, some people will leave their leaves for a while.
It's a pity to throw it away after being damaged. In fact, as long as the residual branches are cut off about 2cm below the budding branches at the upper end of the stem and the routine management is continued, new branches and leaves can sprout after a period of time. Garden use [3] Dracaena is a beautiful and regular plant with bright leaves. It is an excellent foliage plant for modern interior decoration. Small and medium-sized potted plants can decorate the study, living room and bedroom, and large and medium-sized plants can beautify and decorate the hall. Dragon's blood tree has strong adaptability to light, which can be observed continuously for 2-4 weeks in a dark room and placed in a bright room for a long time. Cultivation and management Dracaena draconis likes warmth, is afraid of cold, likes light but is afraid of sun exposure, and is most suitable for growing in a warm but not very hot environment. Spring, summer and autumn are the seasons when Dracaena Dracaena grows vigorously. During this period, breeders must fully meet their needs for water, nutrition and temperature, so that they can grow healthily. Fertilizer and water management
Dragon's blood tree likes the fertile and permeable substrate of cabbage pine, which can be cultivated and managed without soil. The container for cultivation should be Yixing purple sand basin, which is beautiful and elegant, or Jingdezhen ceramic basin in Jiangxi. The matrix can be fully mixed with vermiculite, perlite and peat soil. This matrix is breathable, clean, sterile and tasteless. Dragon's blood tree and this substrate can be cultivated in high-grade containers for several years without turning over pots and changing soil, with developed roots and vigorous growth. Fertilizer and water management of soilless culture is mainly topdressing nutrient solution. If the amount of cultivation is small, special nutrient solution may not be prepared, and "Hongmei" and "Jin Yue" brand nutrient solutions sold in the market may be used. According to the instructions, add appropriate amount of water, mix thoroughly and water, or dig the surface substrate every 30 to 40 days and apply granular slow-release fertilizer. Water every 3 to 5 days to keep the substrate moist. In summer, most areas are hot and dry. Every morning 10 and after 6 pm, spray water on the leaves with a fine-hole watering can to protect the beautiful and bright colors of the leaves. In winter dormancy period, fertilization should be stopped and watering should be controlled. Generally, it should be put indoors for the winter. Water can be poured once every ten days and a half months to keep the soil slightly dry and wet, so that it can survive the winter safely. Temperature illumination Dragon Blood Tree Dragon Blood Tree likes warm, humid and sunny environment, and can also resist shade. However, if it is kept indoors for a long time in a too cool environment, it will also cause the leaves to fade. Therefore, it is best to put the flowerpot on the windowsill in the southeast, so as to fully receive the sunlight. If the dragon's blood tree is kept on the balcony, when the sun is too strong in summer, the flowerpot should be moved indoors, especially at noon, and properly shaded, with a general illumination of 40-50% to avoid burning leaves in the hot sun. Dragon's blood tree likes warmth and is not tolerant of cold. Its optimum growth temperature is 20-28 degrees Celsius. If the summer is hot, the temperature exceeds 32 degrees Celsius, or the winter temperature is lower than 15 degrees Celsius, the Dracaena is dormant or semi-dormant. After the end of 10 in the Yangtze River valley and its south, Dracaena will be moved indoors to prevent early frost. Throughout the winter, it is best to control the room temperature between 10-20 degrees Celsius, not too low. At the same time, the potted plants should be placed on the south window sill, so that the sun can shine directly on the plants, and the orientation should be rotated regularly to make them receive light evenly. If there is no sunshine for a long time, you can turn on the light at night, and put the dragon blood tree under 40 watts of light for artificial lighting to ensure the beauty of the leaves. Put the dragon's blood tree in the curtain at night, block the cold air with thick curtains, or put the flowerpot in a warm place in the corner to safely spend the winter. Disease Prevention Due to the dry environment, Dragon's Blood is easy to grow if it is placed on the balcony or indoor windowsill for a long time.
Red spider, commonly known as fire dragon, belongs to mite pests, which mostly cluster on the back of plant leaves, make nets to shelter and suck juice. The dragon's blood tree was damaged by it, its leaves faded, its chlorophyll was destroyed, and there were many small yellow spots on its surface, which gradually shrank, yellowed and withered, and even fell off in severe cases, losing its due ornamental value. Prevention and control methods. Starscream often hides on the back of branches and leaves or in dense places, and it is easier to catch it by artificial dragnet. If chemical treatment is adopted, 20% triclosan emulsion can be added with 800- 1000 times of water to make a solution for spraying. This medicine has a good killing effect on adults, nymphs and eggs. You can also add 1000- 1500 times of water into 50% dichlorvos emulsion to make a solution for spraying, and pay attention to spraying on the back of the leaves when spraying, so that the killing effect is better. Black spot of Dracaena Dracaena mainly harms the leaves of Dracaena Dracaena, and the leaves of Dracaena Dracaena have irregular or nearly round spots.
There is a brown circle around it and the center is gray. There are many small black mildew spots in the affected area, namely conidiophore and conidia. Pathogen Alternaria
It's called Alternaria sp. , belong to a little knowledge of fungi. Conidiophore is usually unbranched, with obvious spore marks and septa, and the size is 14-48 × 6- 13 (micron). Conidia are rod-shaped with 3- 18 septa, which contract inward.
0- 15. The pathogen overwinters in diseased parts or fallen leaves with mycelium, and conidia are produced in the next spring and spread by wind and rain. When entering the rainy season or the air humidity is high, the lack of fertilizer leads to serious diseases. Control method (1) In the shed where Dracaena dracunculata is prolific, after the doors and windows are closed at the turn of spring and summer every year, 200g of 45% chlorothalonil smoke remover is used every 667㎡.
Overnight fumigation can kill most germs and reduce the incidence. It is recommended to use Futeng brand temperature control electric heating sulfur evaporator, so that sulfur or other bactericides can enter the protected space in vapor state, and be uniformly diffused by electric heating to be completely sterilized. 2 After the disease occurs, 40% chlorothalonil suspension concentrate 400-500 times or 50% chlorpheniramine wettable powder 1000 times and 70% mancozeb wettable powder 500 times and 80 times can also be sprayed.
Spray 500 times of wettable powder 1 time every 10 day, 3-4 times in total. (3) Careful maintenance. Dracaena likes high temperature, high humidity and semi-cloudy environment, the suitable growth temperature is 20-25℃, and the wintering temperature in winter should be higher than 5℃
At℃, the basin soil should be well drained, and too strong direct sunlight in summer will burn the pot tip. Sufficient water should be supplied during the growth period, water should be sprayed on leaves or around plants frequently to increase air humidity, and fertilizer should be applied 1 time every month to enhance disease resistance. [4] Edit this paragraph. Who is the oldest plant birthday girl in the world? According to research, sequoia, baobab and Australian eucalyptus can all live to be over 4,000 years old, and the life span of "world master" giant sequoia is over 5,000 years old, but these are not the oldest plants.
1868, when Humboldt, a famous geographer, visited the island of Horta in Africa, he discovered a plant with a life span of 8000 years. Unfortunately, this tree has been broken by the big storm that just happened. It was because it was broken by the storm that Humboldt could know its exact age by counting the rings on the trunk. This is the oldest known plant. This long-lived tree is called Dragon Blood Tree. Height 1 8m, trunk diameter nearly 5m, breaking point diameter at 3m above the ground1m. Dracaena is a Liliaceae plant, with more than 50 species of/kloc-0 in the world and 5 species in the tropical rain forest in southern China. It grows very slowly, and it takes hundreds of years to grow into a tree. It only blooms once every 100 years, so it is very precious and rare.
After the dragon's blood tree is injured, it will shed a bloody liquid. This liquid is a kind of resin, deep red, and it is a precious Chinese medicine. Chinese medicine is called "Dragon's Blood" or "Kirin essence", which can treat bone and muscle pain. Ancient people also used the resin of Dracaena as the raw material for preserving corpses, because this resin is a good preservative. It is also the raw material of paint. Dracaena is native to the Canary Islands in western Africa. According to local legend, the bloody liquid from the dragon blood tree is dragon blood, because it was spilled on the ground when the dragon fought with the elephant. This is the origin of the name Dracaena. Generally, the sap of trees is colorless and transparent after being damaged. Some trees, such as rubber trees and milk tree, can shed white latex, but I'm afraid you don't know that Dracaena can shed "blood". Dracaena is a tree of Liliaceae. Although it is not too high, about 10 meter, the trunk is particularly thick, often reaching about 1 meter. Its long white ribbon-shaped leaves, sharp at the tip, like a sharp sword, are inserted in the branches layer by layer. Generally speaking, monocotyledons cannot continue to thicken after they grow to a certain extent. Although Dracaena Dracaena is a monocotyledonous plant, the parenchyma cells in its stem can divide constantly, making the stem thicker and lignified year by year, thus forming a tree. Dracaena is native to the Canary Islands in the Atlantic Ocean. There are 150 species in the world, and only 5 species in China, which grow in Yunnan, Hainan Island, Taiwan Province Province and other places. Dragon's blood tree is also a long-lived tree, the longest of which can reach more than 8 thousand years old. Dracaena cambodiana, Liliaceae, Dracaena cambodiana.
Liliaceae, tree-shaped, 3 ~ 4 meters high. Leaves clustered at the top of stems and branches, nesting, about 70 cm long, holding stems without stalks. The panicle is about 30cm long, and the inflorescence axis is hairless or nearly hairless. It is distributed in the southwest of Hainan and is born on dry sand in leeward area. Endangered species under national second-class protection. [5] Introduction to Random Talk about the precious Yunnan red medicinal material-Dragon's Blood, also known as Kirin Exhaustion and Kirin Brown, which is the same family as Yunnan Baiyao and is also the main component of the famous medicine "Qilisan". Li Shizhen praised it as a "holy medicine for promoting blood circulation" in Compendium of Materia Medica, which has good effects of promoting blood circulation, removing blood stasis, relieving swelling and pain, and astringing and stopping bleeding. It can be taken orally or externally. Dragon's blood is extracted from evergreen tree and dragon's blood tree. In the Inci list of cosmetics, the name is: Peruvian croton resin extract. Dragon's blood, as a precious Chinese medicine, has been used in traditional medicine in China for at least 1500 years. However, before 1972, when the Dracaena Dracaena was not found in China, it was always imported from Southeast Asia and Africa, which was very expensive and consumed a lot of foreign exchange every year. In foreign countries, dragon blood is often called dragon (S.
Blood), Africa has a history of more than 2,000 years of cutting Dracaena from the trunk of plants belonging to the genus Dracaena of Agavaceae, and it is only a modern thing to extract the blood of Dracaena from the fruits of vines of Palmae, but Dracaena plants have been recorded in China as early as 1000 years ago. Su Song wrote in Tang Materia Medica: "The original plant of Dragon's Blood is several feet high and charming. Its fatty liquid flowed out of the wood and dripped like jelly. After a long time, it is difficult to coagulate, but it is exhausted, red and bloody. Speaking of domestic dragon blood tree and domestic dragon blood tree, we have to start with a legendary figure-Professor Cai, a famous botanist in China and the founder of Xishuangbanna Tropical Botanical Garden. Cai Lao, 19 1 1, from Dongyang, Zhejiang. He loved nature since he was a child. When I was young, I was admitted to Beijing Institute of Static Biology with excellent results, and studied botany under the famous botanist Mr. Hu Xiansu. In the early 1930s, Cai Lao went to Yunnan, Guizhou and Sichuan to inspect plants and collect plant specimens. In order to enter Daliangshan, he forged a blood alliance with Heiyitou. In order to reach the south of Yunnan, he ignored the danger of poisonous gas and bandits and pulled his horse's tail through the no-man's land. Cai Lao likes plants and loves literature. His novels "Puji-Flower Girl", "Climbing a Ladder-Diary of a Horseman" and "Sichuan Baba Liangshan Man" were highly praised by Mr. Lu Xun. However, his profound literary attainments brought him unfortunate disasters. 1960 the word "dismissed from office" in the new historical drama "Harry dismissed from office" written by Cai Lao's friend Wu Han was added according to Cai Lao's opinion. During the Cultural Revolution, Hai Rui's dismissal from office was criticized, and the word "dismissal from office" was the key point, so Cai Lao was implicated and brutally persecuted. In the 1970s, when the United States invaded Vietnam, China, a "comrade and brother", gave Vietnam selfless assistance. Botanists all over the country, especially those in Fujian, Guangdong, Guangxi and Yunnan provinces, searched everywhere for special hemostatic drugs, but they all found nothing in vain. At that time, Cai Lao had just "liberated" and resumed his work. Over 60 years old, he led a group of young scientific and technological personnel regardless of personal grievances. In 1972, a large area of Dracaena was first discovered on Lime Mountain in Menglian County, Simao District, Yunnan Province. From then on, domestic dragon's blood was born, and its curative effect was better than that of imported dragon's blood processed by palm plants, filling a gap in the history of traditional Chinese medicine. Because of this, after Cai Lao's death, half of his ashes were buried under the dragon blood tree planted by Xishuangbanna Tropical Botanical Garden and the other half under the Metasequoia tree planted by Kunming Institute of Botany, Heilongtan, Kunming. Dragon's blood tree grows slowly, and its trunk thickens less than 1cm in a year, but its life span is the longest in the plant kingdom, reaching 8000 years, so it is praised as "the longevity of plants" by botanists. Dracaena is a tropical evergreen tree. Once its bark is cut, it will shed crimson juice, just like human blood, hence its name. Most of them are distributed in limestone areas with higher altitude, and the height can reach 20 meters. The trunk is thick and short, and the bark splits longitudinally, which makes them look old, but the branches and leaves are very lush. The dark green ribbon leaves are concentrated at the top of the branches, and the whole crown is very beautiful. In many tourist areas, hotels and restaurants, you can see the dragon blood tree for people to watch. Dracaena Dracaena is a rare plant under special protection in China. [6] Edit this small flower variety (Pierre ex, Dracaena cambodiana)
Ganiep,
Dracaena parviflora [7]
Liliaceae, tree-shaped, 3 ~ 4 meters high. Leaves clustered at the top of stems and branches, nesting, about 70 cm long, holding stems without stalks. The panicle is about 30cm long, and the inflorescence axis is hairless or nearly hairless. It is distributed in the southwest of Hainan and is born on dry sand in leeward area. Endangered species under national second-class protection. There are about 150 species of Dracaena flagelliforme, which are found in tropical regions of the old world, and there are about 8 species in China. At present, the recognized dragon's blood resource plant in China is Dracaena, and its Latin scientific name is determined as D.
Sisal hemp ) S.C.Chen (also known as saber-toothed tiger). It is distributed in the area of 2 1.5 ~ 23.6 north latitude, mainly in Cambodia, Laos, Vietnam and other countries in Southeast Asia. In China, Simao and Xishuangbanna in Yunnan are the main producing areas, and there are also some resources in Guangxi and Hainan, which are mainly distributed in southern Yunnan and southern Guangxi at an altitude of 250~ 1 700.
Meters of tropical and subtropical limestone mountains. 1985 to 1990 During the general survey of traditional Chinese medicine resources, a large area of pure forest of Dracaena draconis was found in Simao Jinggu and other counties. Dracaena angustifolia is mostly distributed in the sunny slope of limestone area with steep cliff, and the vertical distribution area is 800~ 1700m above sea level, which is common in stone crevices with steep mountain slopes. Yunnan Jinping, Mengla, Jinghong, Simao, Pu 'er, Jinggu, Menglian, Cangyuan, Zhenkang, Gengma and other places are commonly known as rock brown; Jinuo people call it Yabode, Dai people call it Buried Gaping, and Ai people call it Lai Thinking. Guangxi is called the mountain-sea belt. Dracaena angustifolia is a long green tree-like plant, with 3-7 meters high stem, few branches, dense ring leaves and grayish brown bark. Leaves gathered at the top of the stem, sword-shaped, sessile, leathery, about 1 10.
Cm, 4~5 cm wide, 6~7 cm in the middle, tapering at the top, narrowing to the base, expanding the stalk and obvious midvein; The big panicle is terminal, with a length of120m, with 2-4 clustered flowers, white and yellow, and small flowers with 7-8 flowers.
mm； Berries are spherical with a diameter of 10~ 12.
Well, it's orange, and it's black after drying. Dragon's blood is formed in the secondary vascular bundle and combined tissue of the injured stem. dragon tree
dragon tree
Dragon's blood tree has a thick trunk, sword-shaped leaves, green and shiny, and is full of vitality. Nowadays, it is known as the "new star of foliage plants" and has become a very popular indoor foliage plant in the world. Dracaena draconis was introduced to Europe from tropical Africa 17 in the 1940s, and it was mainly cultivated in greenhouses in British and French botanical gardens for tourists to enjoy. Later, they will enter botanical gardens and parks in the United States and Asia. In 1970s, potted Dracaena was very popular in Europe and America and became one of the important indoor decorative plants. At present, the annual output value of Dracaena Dracaena in the Netherlands has reached 37.6 million US dollars, ranking second in the output value of potted plants in the Netherlands. Italy, Spain and other countries also have a certain production scale. Rock brown
Dracaena cambodiana
Dracaena, an evergreen shrub or small tree in Cambodia. The stem is unbranched or less branched, the bark is grayish brown, and there are annual rings formed by leaf scars. Leaves clustered at the top of stems and branches, sword-shaped, leathery, without obvious main veins, slightly narrowed to the base and then expanded, close to stems, leathery, without hilum. The big panicle is axillary, with many branches, the inflorescence axis is hairless or nearly hairless, and the flowers are light yellow and clustered. Berries are spherical. It is a drought-tolerant and calcium-loving plant, which often grows in groups in crevices of limestone mountains. It is produced in limestone mountain areas of Mengla, Menglian, Pu 'er and Zhenkang counties. Plants with high economic value, endangered species, national second-class protection. [8] Production standard of planting technology: 14cm pot, with a height of 50cm, a crown width of about 40cm and a growth period of about 3 months. Substrate preparation: 5-40mm loose imported peat with good drainage and ventilation, add water and stir evenly, (standard of adding water: after stirring evenly, hold a handful of peat with your hand and water seeps through your fingers) and plant it in a cup. 14cm pot contains about 400 ml of peat, and a pack of 300 liters of imported peat can hold about 750 cups. Potting requirements: select high-quality seedlings produced professionally, with height of 25 cm, crown width of 20 cm, 4-6 leaves, no pests, no dead leaves and no yellow leaves. Pot filling: The reused old pot must be soaked in 1000 times potassium permanganate solution for more than half an hour, then washed with clear water and dried for later use. Small potted plants are usually planted in pots with a diameter of 14cm. When planting, put a substrate of about 3cm on the bottom of the cup, and then move the seedlings into the cup. Don't plant the seedlings too deep, and the base of the plant should be flat. The matrix has moderate elasticity and is filled to the cup for 9 minutes. Stratified propagation
dragon tree
The stems of Dracaena dracunculata mostly grow upright and have few branches. After several years of plant growth, the basal leaves fall off and naturally lose their ornamental value. According to this situation, captive breeders can breed under high pressure in the high temperature and high humidity season from May to July. The method is as follows: cut the appropriate part of the plant stem into a ring with the width of 1.8-2.2 cm, and peel off the cortex of the ring with a knife; Wipe off the juice overflowing from the incision with a clean wet cloth; Coating the cortex at the upper end of the incision with 5000- 1000ppm aqueous solution of naphthylacetic acid; Tie the white plastic film at the lower end of the incision, straighten it into a funnel shape, and put it in. After the high pressure of Dracaena, it is necessary to check whether the matrix is dry at any time and replenish water at any time. Generally, after 30 ~ 40 days of cultivation, new roots will appear in the girdling area, and from September to 10, they can leave the mother and be cultivated into independent plants. Cuttage propagation of Dracaena can also be used for asexual propagation, and the time is May-June. At this time, it is a dragon blood tree.
Dracaena is in the vigorous growth period, and the plants are rich in nutrition, and it is easy to survive after cutting. Before cutting, you can choose the mother plant with high ornamental value and plant it for two years.
Strong branches on the tree, each about 10-20 cm long, with or without leaves. The base of the cuttings is cut into a flat mouth, and leaves are left after the upper part is crosscut. The upper and lower incisions can be soaked with clear water to wash the spilled juice, then placed in a cool and ventilated place for a while, and then the base of the cuttings is soaked with 500- 1000ppm of naphthylacetic acid for 2-3 cm, usually for 5 seconds, and the cuttings are inserted with the immersion. For the cuttage of Dracaena dracunculata, the seedbed can be a small pottery flowerpot, and the substrate can be vermiculite, perlite or high-temperature sterilized plain sand, which can be put into the pot for cuttage. One plant in each pot, water it once after it is inserted, and put the seedbed in a place where flowers are shining and carefully maintain it. The future management work is mainly to keep the substrate moist. The wound of Dracaena Dracaena heals quickly, takes root early and germinates quickly. It usually takes 15 to 20 days. Under the action of trauma hormone, the incision will produce callus. In 25 ~ 35 days, the cuttings will soon have original roots under the action of endogenous hormones, and new roots will germinate in 35 ~ 40 days. After two months, they can be transplanted into cultivated soil. Dracaena is a beautiful and regular plant with colorful leaves. It is an excellent foliage plant for modern interior decoration. Small and medium-sized potted plants can decorate the study, living room and bedroom, and large and medium-sized plants can beautify and decorate the hall. Dragon's blood tree has strong adaptability to light, which can be observed continuously for 2-4 weeks in a dark room and placed in a bright room for a long time.