First, the supply of common Metasequoia glyptostroboides exceeds demand. According to statistics, the total sales volume of Metasequoia glyptostroboides in China in 2009 was about 550 million. However, due to the serious homogenization of Metasequoia glyptostroboides seedling products in China and fierce market competition, the overall market output exceeds sales and the supply exceeds demand, and the market sales and profits are declining. Therefore, the demand for variety and quality upgrading has become a trend.
Second, Metasequoia glyptostroboides has high efficacy. What tree is the most expensive? What tree is the most valuable? What kind of tree is the most profitable? Upgrading and transformation of seedling varieties, turning decay into magic; Metasequoia glyptostroboides introduced by agriculture, rural areas and flowers and trees in Jiangxi has achieved a net income of over one million yuan for farmers. By upgrading the existing seedling varieties, ordinary seedlings were changed into colored seedlings, which improved the planting efficiency and increased farmers' income. Ordinary Metasequoia saplings born that year, the regular price is less than 1 yuan. However, if it is grafted and cultivated into a new variety of colorful tree species-Metasequoia glyptostroboides, its value will soar 20 times.
Thirdly, Metasequoia glyptostroboides is dignified, steady, fast-growing and strong because its trunk is tall and strong. Its annual growth height exceeds 1 m and its diameter exceeds 1 cm. Bark reddish brown; Stable color, no fading or discoloration. During the whole growth period, the leaves show bright and stable golden yellow, golden yellow and pagoda-shaped crown, which is a new variety of color-leafed trees. Metasequoia glyptostroboides has low requirements on environmental microclimate and air humidity, and is resistant to frost and flood. Pollution prevention and pest control; Cold and heat resistance, low maintenance cost; Easy to cultivate and many other characteristics. At present, it has been introduced in Beijing, Jiangsu, Shanghai, Zhejiang and Sichuan. The experiment shows that Metasequoia glyptostroboides planted in Shanghai, Jiangsu, Zhejiang and Sichuan has strong adaptability, fast growth, straight trunk, beautiful tree shape and stable leaf color, and the three-year-old seedlings can reach more than 3 meters high.
Fourthly, Chinese fir has a long history of cultivation and is widely cultivated in China gardens, among which Metasequoia glyptostroboides is the top grade in gardens, with high ornamental value and economic value. Metasequoia glyptostroboides is the best in Chinese fir. It not only has beautiful leaves and is better than ordinary Metasequoia glyptostroboides, but also grows fast. Without pruning, the crown naturally forms and the adult crown is very beautiful. Metasequoia glyptostroboides has a wide range of operations, which can also greatly save manpower and material resources, reduce production costs and win the market with low cost and high quality.
5. Metasequoia glyptostroboides, also known as Metasequoia glyptostroboides and Metasequoia glyptostroboides, integrates color leaf appreciation and health care and physical therapy, and has irreplaceable garden color tree species, which meets the needs of relevant national policies and garden upgrading. Because the current greening construction has changed from simple greening to urban color beautification, new landscape engineering and design need colored tree species, and the old green space reconstruction also needs colored tree species. It can be predicted that the proportion of colored-leaf trees in the city will gradually increase, which is expected to reach 20-30%. If the old green space is not upgraded, the demand for colored seedlings will reach 4,000 hectares only according to the annual increase of green space (from 2003 to 20 10, the average annual increase of urban green space is more than 20,000 hectares), and the prospect is very broad. The color seedling industry is in the ascendant and is in the development stage. However, the supply of colored seedlings on the market is still very small, which is basically in short supply. Many domestic seedling enterprises, especially in areas where new varieties of seedlings are developing rapidly, have begun to realize the huge market prospect of color-leafed tree species and began to introduce color-leafed seedlings, but the current quantity can not meet the future market demand. Once these brightly colored seedlings leave the nursery, they will be favored by the market because of their strong ornamental value and novelty. Some experts predict that in the next decade, large-scale seedling raising and color-leafed tree species will not be out of date.
Sixth, with the accelerated pace of life and the increase of work pressure, modern people yearn for a beautiful environment and a healthy body and mind; Ecological recuperation has naturally become a new topic discussed by modern people. So what is "ecological recuperation"? The understanding of "ecological recuperation" is a living environment that combines environmental aesthetics with health care. In urban landscape architecture, we should not only have the elements of aesthetic enjoyment, but also give consideration to the medical concept of health care and recuperation.