Orchid nursery nursery Di Linh – the result of the project of breeding In-vitro fake crane orchids by the Center for Science and Technology Application (under the Department of Science and Technology of Lam Dong Province). The technique of propagation by plant tissue culture (In-vitro) is no longer strange in Lam Dong province in general and Da Lat city in particular. The application of this technology to propagate the species of Orchid Di Linh was first deployed by the Center for Science and Technology Application. The project was completed, completed and accepted by Mr. Phan Quoc Chinh, Deputy Director of Lam Dong Center for Science and Technology Application and his colleagues. To select the original source of quality seed, the people who carried out the project had to collect Gia Hac Di Linh orchids in Da Lat city and Di Linh district, in orchid gardens that met strict standards. Sampled plants must have an average height of 30-40 cm, have 14-16 pairs of leaves, average trunk diameter of about 4mm and be planted in plastic or terracotta pots. Each tree has 4-5 fruits and the physiological ripening rate is not equal. Selected fruits that should be dark green and physiologically ripe, of the specified size, without cracks, were collected for inclusion in the sample. After cleaning and disinfecting, samples of Di Linh falcon will be propagated in-vitro according to the following summary procedure: Initial culture stage to create buds and clusters of buds; rapid multiplication stage; rooting stage to create a complete plant. These three stages take about 28 weeks, then the seedlings (5cm tall, 4cm long roots, good growth, dark green leaves) are brought to the nursery to plant and take care of. After about 24 weeks, the plant can be grown with a height of 5-7cm, with 4-5 leaves. According to Mr. Phan Quoc Chinh, plants grown in an In-vitro environment must ensure the conditions of temperature, humidity and light intensity according to certain cycles. In addition to the results of creating a series of fake crane orchids, the project also built a standard process for propagating this plant by the In-vitro method and can be transferred to other units. “During the implementation, we tried to add ripe banana pulp, coconut water to the culture medium. The results showed that shoot formation and shoot growth also increased faster than normal, “- Mr. Chinh said. Very cheap price Seedlings of Phalaenopsis orchids are extracted and put into nutrient bags to be raised in the laboratory before being sent to the nursery. After completing the In-vitro propagation process, the first 500 orchid seedlings were brought to the nursery at the Don Duong Experimental Station (Don Duong District) and continued to be tested on many different types of media within a short period of time. 3 months. As a result, the rate of plants living outside the nursery reached 90%. Among the types of substrates put into the experiment, the coir fiber medium helped the plant grow best, the height of the tree reached 5.6 cm; The root length is 3.70 cm, the survival rate is 95% and the tree has a large stem, dark green leaves, many leaves. According to Mr. Nguyen Nhu Chuong, Director of Lam Dong Center for Science and Technology Application, after the acceptance of the project, the Center continues to propagate about 3,000 plants to supply domestic and foreign markets at an export price. selling for only about 25,000 VND/seedling. “The method of tissue culture in the laboratory makes it possible to propagate many times larger numbers than natural breeding. Therefore, the price that the Center is selling to the market today is normal,” said Mr. Chuong. From the research results of the topic, Lam Dong Center for Applied Science and Technology has developed a baseline standard for the Di Linh Giac Giac orchid seedling and was continued by the Sub-Department of Cultivation and Plant Protection. take. Thereby, the genetic resources of rare forest orchids originating in the locality are preserved and developed. A Di Linh Fake Orchid is eligible for sale for 25,000 VND / tree, very cheap compared to the current market. According to Mr. Ho Anh Dung, Vice Chairman of Da Lat Flower Association, the quality of In-vitro seedlings will ensure higher uniformity and superiority compared to traditional methods, serving the conservation of seed resources. and commercial purposes. The first-line mother tree has been carefully selected, which will help the seedlings to preserve the best characteristics of the mother plant, not only the Di Linh orchid but also precious plants such as Ngoc Linh ginseng, Camellia flower .. .

After irradiation, samples of the fake crane orchids were taken to the separation room to be cultured in nutrient solution for a certain time. (Photo: Nguyen Dung/VNA) In Lam Dong – the “capital” of high-tech agriculture of the country, the application of new science and technology in agriculture is increasingly widespread. Especially for the plant breeding industry to preserve rare genetic resources as well as to develop commercial varieties of these plants. Wild Orchid Di Linh is one of such trees. They are not only mass-produced, but also irradiated to create mutations on demand. Di Linh fake crane – a “famous” orchid of orchid players inside and outside Lam Dong province, often sought to buy with many different prices. However with In-vitro technology As modern as it is today, for the first time, the Center for Science and Technology Application (Lam Dong Department of Science and Technology) has successfully studied the process of mass propagation of this plant. Mass breeding The technique of propagation by plant tissue culture (In-vitro) is no longer strange in Lam Dong province in general and Da Lat city in particular. The application of this technology to propagate the species of Orchid Di Linh was first deployed by the Center for Science and Technology Application. The project was completed, completed and accepted by Mr. Phan Quoc Chinh, Deputy Director of Lam Dong Center for Science and Technology Application and his colleagues. To select the original source of quality seed, the people who carried out the project had to collect Gia Hac Di Linh orchids in Da Lat city and Di Linh district, in orchid gardens that met strict standards. Sampled plants must have an average height of 30-40 cm, have 14-16 pairs of leaves, average trunk diameter of about 4mm and be planted in plastic or terracotta pots. Each tree has 4-5 fruits and the physiological ripening rate is not equal. Selected fruits that should be dark green and physiologically ripe, of the specified size, without cracks, were collected for inclusion in the sample. A seedling of the fake crane orchid has had a mutation: the color of the leaves, the stem has turned white or purple. (Photo: Nguyen Dung/VNA) After being cleaned and disinfected, samples of Di Linh imitation crane will be propagated in-vitro according to the following summary procedure: initial culture stage to create buds and clusters of buds; rapid multiplication stage; rooting stage to create a complete plant. These three stages take about 28 weeks, then the seedlings (5cm tall, 4cm long roots, good growth, dark green leaves) are brought to the nursery to plant and take care of. After the next 24 weeks, the plant can be grown with a height of 5-7cm, with 4-5 leaves. According to Mr. Phan Quoc Chinh, plants grown in an In-vitro environment must ensure the conditions of temperature, humidity and light intensity according to certain cycles. In addition to the results of creating a series of fake crane orchids, the project also built a standard process for propagating this plant by the In-vitro method and can be transferred to other units. “During the implementation, we tried to add ripe banana pulp, coconut water to the culture medium. The results showed that shoot formation and shoot growth also increased faster than normal, “- Mr. Chinh said. Very cheap price After finishing breeding process In-vitro, the first 500 orchid seedlings were brought to the nursery at the Don Duong Experimental Station (Don Duong District) and continued to be tested on many different types of media within 3 months. As a result, the rate of plants living outside the nursery reached 90%. Among the types of substrates put into the experiment, coir fiber media helped the plant grow best, the height of the tree reached 5.6cm; The root length is 3.70cm, the survival rate is 95% and the tree has a large stem, dark green leaves, many leaves. A Di Linh Fake Orchid is eligible for sale for 25,000 VND / tree, very cheap compared to the current market. (Photo: Nguyen Dung/VNA) According to Mr. Nguyen Nhu Chuong, Director of Lam Dong Center for Science and Technology Application, after the acceptance of the project, the Center continues to propagate about 3,000 plants to supply domestic and foreign markets at an export price. selling for only about 25,000 VND/seedling. “The method of tissue culture in the laboratory makes it possible to propagate many times larger numbers than natural breeding. Therefore, the price that the Center is selling to the market today is normal,” said Mr. Chuong. From the results of the study, Center for Applied Science and Technology Lam Dong has carried out the development of basic standards for Gia Hac Di Linh orchid seedlings and received by the Sub-Department of Cultivation and Plant Protection. Thereby, the genetic resources of rare forest orchids originating locally are preserved and developed. According to Mr. Ho Anh Dung, Vice Chairman of Da Lat Flower Association, the quality of In-vitro seedlings will ensure higher uniformity and superiority compared to traditional methods, serving the conservation of seed resources. and commercial purposes. The first-line mother plant has been carefully selected, which will help the seedlings to preserve the best characteristics of the mother plant, not only the Di Linh orchid but also precious plants such as Ngoc Linh ginseng, Camellia flower./ .

Hydropower dams can negatively impact the environment. More harm than good? Bach Hac Than Hydropower Plant officially stored water when the second bottom outlet closed on April 6. This means that the world’s second largest hydroelectric project has taken an important step towards its power generation goal on July 1. With the discharge door closed, the reservoir water level begins to rise and will reach 775 meters by mid-June. As a result, generation conditions are met. From August to September, the water in the lake will be stored up to 800 meters and then 825 meters in June 2022. The total storage capacity of the Bach Hac Than dam will be 20.627 billion cubic meters, accounting for 91% of the Kim Sa river basin. This is an important part of the Yangtze River flood control system, which has a capacity of 7.5 billion cubic meters. The total installed capacity of this second-ranked power plant in the world is 16 million KW. The capacity of a world-leading unit is 1 million kilowatts. New electricity will help China achieve its carbon neutralization goal. The Bach Hac Than Hydropower Station is an important part of the flood control system in the Yangtze River basin. At the same time, Bach Hac Than is a landmark project in the development of the global hydropower industry. However, while some people give information about clean energy of hydroelectricity, many argue that it can cause immeasurable damage to biodiversity, soil erosion, loss of archaeological and cultural sites. Even more than a million people will have to be relocated. Although the government has yet to reveal a detailed approach to meet the target of achieving carbon neutralization by 2060, hydropower has been featured in the 5-year plan 2021 – 2025 as well as vision 2035. Both were approved by China’s top legislature in March. In those plans, the government stated its intention to “step up the construction of hydroelectric facilities in southwestern China”. At the same time, promote wind energy and solar energy. “The dams will be a solid support to China’s energy industry and reduce carbon emissions. The construction of hydropower plants can bring benefits to irrigation, shipping and power generation, with great socio-economic value, ”said Professor Lu Qiang of Tsinghua University. Lin Boqiang, head of the Xiamen University’s China Energy Policy Research Institute, said the country is set to expand hydroelectric capacity. Because, water is the cheapest clean energy that can be used stably. “The dam construction is still controversial in China because of environmental concerns. However, the objection is no longer as strong as before, because the need to achieve carbon neutralization is increasingly urgent, ”said Mr. Lin. China’s dam construction activity began in the 1950s and has accelerated over the past two decades. At the end of 2018, Chinese hydroelectricity had a capacity of 352GW, accounting for 28% of the total global capacity and more than three times that of any other country. Heavy impact The Bai Hac Than Dam is worth 170 billion yuan ($ 26 billion) on the Jinsha River (Yangtze), in Sichuan province. The dam has made many people admire for the speed of its construction. China only took four years to build, despite the rugged terrain and far away, with the help of artificial intelligence technology. The Bai Hac Than emergency construction reflects the acceleration in China’s plan to expand hydroelectric capacity as a source of renewable energy. By the time Bach Hac Than reaches full capacity by the end of next year, China will be a country with five out of the 10 largest hydroelectric plants in the world. That pace of development has raised concerns about the impact of hydropower dams. China Green Development and Biodiversity Conservation said it is closely monitoring new dam construction projects. “It has been shown that dam construction harms the ecosystem and affects the habitat of wildlife,” said Wang Jing, a spokesman for the organization. We are concerned that some places will increase the development of hydropower projects to serve the government’s goal of carbon neutral ”. According to Fan Xiao, geologist and chief engineer of the Sichuan Department of Geology and Minerals, dams have a negative impact on the local ecological environment. Especially for aquatic animal biodiversity. They slow down the water flow rate and reduce the volume and purity of the water, Fan said. From there, it destroys the habitats of aquatic animals and hinders fish migration. Chinese scientists in 2019 announced the extinction of paddle fish. It is one of the largest freshwater fish in the world. They are also known as Chinese swordfish, with a length of 7 meters. This fish is believed to have gone extinct from 2005 – 2010. The construction of the Cat Chau Ba dam on the Yangtze River since the 1970s has been a major contributor to this species’ decline, researchers found, by preventing fish from reaching their only breeding ground. upstream. According to the scientists, the river system is in trouble containing more than 4,000 aquatic species. However, dam construction, overfishing, water traffic and pollution have caused a lot of damage, with fish stocks declining and biodiversity rapidly declining. Mr. Fan said that building more hydroelectric plants is not the best way to reduce carbon emissions. “Water is a kind of clean energy, but we cannot ignore the huge carbon emissions generated by dam construction, excavation and migration,” warns the expert.