China Red Poplar China Red Poplar, also known as China Red Poplar, is the first plant in the world.
The world's first Populus davidiana was a new poplar variety cultivated in 2000 by Professor Zhu, a senior forestry engineer and president of Henan Academy of Forestry. In 2006, it passed the examination and approval of Shanxi Province and obtained the protection right of new varieties of the State Forestry Administration. This tree species has attracted the attention of experts and scholars at home and abroad and the news media, and has been affirmed and highly praised. Professor Huang Dongsen, an expert in poplar breeding at the Chinese Academy of Forestry, said: "The cultivation of Populus deltoides fills a gap in poplar breeding in the world." Dr. Lu, deputy director of the Forestry Research Institute of China Academy of Forestry, said: "Populus euphratica is unique in China and even in the world." Poplar experts in Oregon, USA, were greatly surprised when they saw this tree species, and even said, "It's a rare treasure."
Populus euphratica is a new variety with bright leaves, also known as Populus davidiana. Populus euphratica is not only tall, but also has big and thick leaves, and the color of the leaves changes all the year round. Generally, in normal years, the leaves spread around March 20th, and the leaves are rose red, which can last until the end of June, and turn purple green from July to September, dark green from 65438+1October, apricot yellow or golden yellow from/kloc-0+1October, and purple red before the end of July. Petiole, vein and twig are often red, with bright and attractive color, which is rare in the world and has high ornamental value. It is a treasure in the red leaves of colorful tree species and can be widely planted in urban greening.
Populus tomentosa is a budding variety first discovered by Mr. Cheng Xiangjun in China. As a fast-growing poplar, it has large volume, strong adaptability, straight trunk, fast growth, short tree-forming period, and large-scale seedlings in three years. It is a good tree species to build fast-growing and high-yield forests. Red-leaf fast-growing poplar is germinated from male plants. From a genetic point of view, it is also a male plant and will not form flying flocs. Therefore, the fast-growing red-leaf poplar will not form flying flocs to pollute the air in greening, and it has strong resistance to longicorn beetles, mites, leaf spot and floods. Due to the rapid growth of fast-growing poplar with red leaves, it is easy to quickly cultivate large-scale engineering seedlings to meet the requirements of rapid gardening and big trees in recent years.
As a greening tree species, Populus tomentosa is favored by the majority of producers and operators because of its advantages such as wide suitable planting area, quick effect and great benefit. With the increase of greening construction in cities, gardens and roads, the shortage of excellent red-leaf fast-growing poplar seedlings has become increasingly prominent. In order to alleviate this problem as soon as possible, researcher Li Changxiao, the inventor of plant non-test-tube high-efficiency rapid propagation technology, successfully propagated fast-growing poplar seedlings by using plant non-test-tube high-efficiency rapid propagation technology, which can completely meet the large demand of red-leaf fast-growing poplar seedlings at home and abroad in a short time. Using this technology, the fast-growing Populus tomentosa seedlings can take root in 5 days and be tempered in 30-40 days. But also can maintain the excellent characteristics of fast-growing red-leaved poplar, ensure the purity of seedlings, and can be propagated all year round. Its comprehensive rapid propagation efficiency has reached or exceeded the rapid propagation technology of plant tissue culture, which is of universal significance to the asexual propagation of many plants. The technology of efficient and rapid propagation of plants without test tubes has a wide range of applications, and its popularization and application are extremely extensive. The successful rapid propagation of a plant variety can promote or promote the rapid development of an industry. Since its invention, this technology has been verified in the development and application of more than 700 kinds of economic plants such as red-leaf fast-growing poplar. The success of rapid propagation of Populus tomentosa will certainly make due contributions to the development of green industry and the construction and improvement of ecological environment in China.
After years of cultivation and regional tests, Populus tomentosa has stable characters and outstanding specificity. It has four characteristics:
Leaf color changes of Populus tomentosa (1) with three seasons and four changes. Study on leaf color of Populus tomentosa. Changes in winter, summer and autumn. Germination is purplish red until mid-June, purplish green from mid-June to mid-July, brownish green from mid-July to early June of 10, and gradually turns yellow or orange after mid-June of 10, but petiole, vein, top of trunk and top of lateral branches are always red during the whole growth period. The leaves are dense, big, thick and shiny, and the leaves at the top of the trunk and the top of the lateral branches are always as bright as blooming flowers.
(2) Early germination and late defoliation. Leaves (Huanghuai area) 165438+ 10 fell in late March, which took a long time to beautify and color, and there was no flying floc in males.
(3) Strong resistance and wide adaptability. Resistant to pests and diseases, strong resistance to longicorn beetle, gall mite and leaf spot. Drought resistance, waterlogging resistance and low temperature of -35℃. Shanxi, Fujian, Guangdong, Sichuan, Xinjiang, Inner Mongolia, Heilongjiang, Henan and other places have been planted successfully.
(4) dual-purpose tree species. Not only has high ornamental value, but also is a fast-growing timber tree species. The trunk is straight and complete, tall and straight, and grows rapidly. In that year, the cuttings could reach 4-5 meters and the ground diameter was 3-4 cm. It can be finished in 5-6 years, with good wood and high practical value.
Populus tomentosa is a budding variety of Lin Zhong 2025. This is a tall colorful deciduous tree with alternate leaves, a broad crown and no flying flocs in males. The growth performance and comprehensive characters are basically similar to those of poplar 2025.
1, the tree shape is good: the trunk is straight, straight, plump and tall.
2. Good wood: it is a good raw material for wood processing, especially for papermaking and plywood. Comparison between Populus tomentosa (right) and Populus tomentosa (left)
3. Functional period of big leaves and long leaves: the leaf length is between 12-25 cm and the width is between 12-23 cm; Compared with Poplar 46 and Yang Zao 69, the germination time is 6-9 days and 3-5 days respectively, and the defoliation time is 60 days and 20 days respectively.
4. Fast growth and easy planting: the growth height of cutting seedlings in that year was 3-4 meters, and the ground diameter was about 3.5 cm; Stubble seedlings are 5-6 meters high and 4.5 cm thick; The 6-year-old tree is about15m high and 30-35cm thick. Easy to plant and survive.
5, strong resistance: resistance to the harm of longicorn beetles, high resistance to gall mite pests and high resistance to leaf spot.
6. Drought resistance, waterlogging resistance and frost resistance: the root system is developed and vigorous, with deep roots, drought resistance and waterlogging resistance and low temperature of -35℃.
7. Wide adaptability: it is most suitable for planting in the "three north" areas of China; But planted in Guangdong, Yunnan, Sichuan, Tibet, Xinjiang, Heilongjiang and other places, the growth performance is good and the characters are stable.
China Hongye Poplar is the only variety of Hongye Poplar in the world at present, which is an organic combination of ornamental and fast-growing and high-yielding, and it is the fastest variety to generate scenery among garden colorful tree species. It has a very broad application prospect in waterway greening, urban and rural beautification and urban greening. At present, it is difficult to find a tall and fast-growing colorful tree except Populus tomentosa. The appearance of fast-growing Populus tomentosa fills the blank of colorful tree species. Its fast-growing and gorgeous colors are incomparable to other colorful tree species, and it can be widely used as a landscape tree species for solitary planting and film rows. If it is matched with other yellow-green shrub species, it will show its bright and dazzling effect.
Populus tomentosa, as a greening tree species, is favored by the majority of producers and operators because of its advantages such as wide suitable planting area, quick effect and great benefit. With the increase of greening construction in cities, gardens and roads, the shortage of excellent red-leaf fast-growing poplar seedlings has become increasingly prominent. In order to alleviate this problem as soon as possible, researcher Li Changxiao, the inventor of plant non-test-tube high-efficiency rapid propagation technology, successfully propagated fast-growing poplar seedlings by using plant non-test-tube high-efficiency rapid propagation technology, which can completely meet the large demand of red-leaf fast-growing poplar seedlings at home and abroad in a short time. Using this technology, the fast-growing Populus tomentosa seedlings can take root in 5 days and be tempered in 30-40 days. But also can maintain the excellent characteristics of fast-growing red-leaved poplar, ensure the purity of seedlings, and can be propagated all year round. Its comprehensive rapid propagation efficiency has reached or exceeded the rapid propagation technology of plant tissue culture, which is of universal significance to the asexual propagation of many plants. The technology of efficient and rapid propagation of plants without test tubes has a wide range of applications, and its popularization and application are extremely extensive. The successful rapid propagation of a plant variety can promote or promote the rapid development of an industry. Since its invention, this technology has been verified in the development and application of more than 700 kinds of economic plants such as red-leaf fast-growing poplar. The success of rapid propagation of Populus tomentosa will certainly make due contributions to the development of green industry and the construction and improvement of ecological environment in China.
Populus tomentosa is the only colorful fast-growing tree species of tall trees in the world, which can achieve the effect of "creating a scene on the site" in roads, urban suburbs and landscaping. The variability of leaf color overcomes the shortcomings of colored tree species at present, and can quickly form a large-scale and high-grade garden landscape. With the 2008 Olympic Games, the 20 10 Shanghai Color World Expo and the rapid development of urban and rural construction in China, Populus davidiana will become a kind of pet, and its market development prospect is very broad.