The main points of propagation of torch tree

Because the torch tree is adaptable and propagates very fast, it is relatively easy to plant. However, due to the propagation speed of torch tree is too fast, and its secretions will also cause adverse reactions of allergic people, so the cultivation of torch tree is not much.

Torch tree

The propagation of torch tree can be sown, divided or rooted. Sowing in September to collect mature ears, exposure to threshing, low-temperature wet sand stratification to the next spring sowing. Knead the seed coat with less alkali before sowing, remove the wax from the seed coat, then soak it with so ℃ hot water for 5 minutes, stir it continuously, and then remove it. The mixed wet sand is placed in 20 ℃ room to accelerate germination. Strip sowing can be carried out after about 20 days of budding, and the sowing amount is 3-5 kg per mu. As long as the soil is kept moist, it will basically come out after 20 days, and the seedling height can reach 0.8-1 m in the same year. The sprouting power of the torch tree is very strong, the seedlings of more than two years old often sprout many roots around it, dig up the sturdy roots 0 seedlings when dividing the evil, and plant them with fibrous roots, that is, they can survive. Root insertion is after the seedling comes out of the nursery, collect the residual roots and bury them directly in the nursery. That is, when the seedling comes out of the nursery every year, the lateral root with a diameter of more than I cm is selected, cut into a root segment 20 cm long, and inserted directly into the whole nursery with a row spacing of 40 cm x 30 cm according to the polarity of the root. The soil at the top of the root segment is 2-4 cm thick to keep the soil moist, and the seedlings can reach more than 1 m in the same year.

Key points of cultivation of Torch Tree

The leaves of the torch tree will turn bright red in autumn, which has a certain ornamental value and is also an excellent autumn landscape tree. However, due to the rapid reproduction of the torch tree, it has been identified as a serious potential hazard.

Torch tree

Torch tree, the family name of the lacquer tree family, is a small deciduous tree of the genus Lacqueraceae. Leaves odd-pinnate, alternate, oblong to lanceolate. Erect panicle terminal, spikes bright red. Fruit oblate, with red bristles, closely gathered to form a torch. The fruit does not fall for a long time after ripening in September, and the leaves turn red after autumn, which is very spectacular. Native to Europe and America, it often grows on open sandy or gravelly soil.

China was introduced by the Institute of Botany of the Chinese Academy of Sciences in 1959 and has been popularized to all provinces and regions since 1974. There are more cultivation in the provinces (regions) in the north of the Yellow River basin, which are mainly used for barren mountain greening and saline-alkali wasteland scenic forest tree species. The propagation speed of torch tree is so fast that it can not be compared with many greening tree species until 2012. it has unique excellent characteristics and serious potential harm.

The main points of species distribution and differentiation of pine trees Daquan pine trees have strong adaptability to terrestrial environment. They can withstand a low temperature of-60 ℃ or a high temperature of 50 ℃. They can grow in bare mineral soil, sand, volcanic ash, calcareous soil, limestone soil and all kinds of soil from podzolic soil to red soil. They are resistant to drought, barren and like sunlight, so they are famous pioneer tree species. Let's take a look at the types of pine trees.

1. Distribution species 1. Compared with Baishanzu fir, silver fir is famous for 20 years earlier. Although the branch and leaf specimen of this plant was collected by Chinese botanist Yang Xianjin in Jinfo Mountain, Sichuan Province as early as 1938, it has not been identified because there are no flowers and cones. It was not until 1955, when a scientific expedition led by Professor Zhong Jixin collected cone plant specimens from the Huaping forest area of Longsheng County, Guangxi, that silver fir was published by botanists Chen Huanyong and Kuang Keren. Silver fir is a fossil plant thought to have become extinct on the earth in the past. Its cone fossils and pollen have been found in Siberia at 60 degrees north latitude and Tertiary strata in southwestern France. The discovery of living silver fir shocked botanists, and Western scholars were even more impressed by the land of China. Only China has living silver fir in the world, and the number is very small, only a few thousand, scattered in Jinfo Mountain in Sichuan, Huaping and Dayaoshan in Guangxi, Fushan and Bamianshan in Hunan, and Daozhen and Tongzi Mountain in Guizhou, which are very rare. Cunninghamia lanceolata can only grow in the deep mountains where there is no severe cold in winter, no heat in summer, abundant precipitation and very humid air, which is very demanding to the environment. Therefore, although it has beautiful appearance and excellent wood, it is difficult to introduce and cultivate, and it is still a promising tree treasure in the field of botany and horticulture in the world. People love silver fir and give it many moving names: "living fossil plant", "giant panda in plant", "Huaxia forest treasure", "Linhai pearl". More eager for it to get out of the mountains and forests as soon as possible. Densely yellowish brown or reddish brown pilose. The cone is 9-14 cm long, and the seed scales do not open or slightly open after maturity. Seeds do not fall off, wingless (fig. 1 Korean pine). It is the main forest tree species in Xiaoxing'an Mountains and Changbai Mountain in China. The northwest boundary of China is from Aihui to Bei'an, and the southwest boundary is from Dandong to Benxi. From China to the northeast, it also extends to the coastal areas of the southern part of the far East of the Soviet Union east of the Heilongjiang River and the Wusuli River, and to the south to the central Honshu and Shikoku mountains of Korea and Japan. 2. Baishanzu fir 20 years ago, few people in the world knew that there was a peak called Baishanzu along the southeast coast of China. In 1976, Wu Mingxiang, a senior engineer at the Forestry Institute of Qingyuan County, Zhejiang Province, was a blockbuster. The Baishanzu fir, discovered and named by him, made Baishanzu's "forgotten corner" shine brilliantly in the botanical circle of the world. Among the 50 known species of fir in the world, Baishanzu fir is the most precious. Because this kind of tree grows only on the southwest slope of Baishanzu Peak in Zhejiang Province, China, and only three trees are alive, one of which is weak and one is malnourished. This is only half a step away from extinction for a species. In 1987, the International species Conservation Commission listed Baishanzu fir as one of the 12 most rare and endangered plants in the world. Chinese authorities are also actively taking measures to turn this endangered plant from danger through artificial reproduction. 3. Pinus koraiensis (P.koraiensis), Pinus koraiensis, Pinus koraiensis Pine is the most important forest tree species in the northern hemisphere. with the exception of Sumatran pine distributed to 2 degrees south latitude, all other species grow naturally in mountain fields from equator to 72 degrees north latitude. Especially in temperate regions, pine plants not only have many species, but also often form a vast forest sea, so pines are known as "the mother of forests in the Northern Hemisphere". 4. P.sibirica, similar in shape to Korean pine, characterized by branchlets with yellowish hairs, cones 5-8 cm long, and seed scales apex rounded, intrinsically curved. Distributed in the Kanas and Hom River basins northwest of the Altai Mountains in China, it is vertically distributed in the range of 1600m above sea level and is often mixed with Larix gmelinii. It is also distributed in northeastern Europe and Siberia of the former Soviet Union.

Second, there are many types of pine trees, such as Luohan pine, white bark pine and so on; industrial trees are red pine, white pine, yellow pine and so on; common are cedar, black pine, Masson pine. There are nearly 115 species of pine trees in the world. Although there are many species, most of the leaves are slender like needles, commonly known as pine needles. The needles are mostly produced in bunches of one or several leaves: a bunch of single-leaf pines, distributed only in Nevada and Mexico in the United States, belonging to a few species. On the other hand, the double-leaf pine with two needles in a bunch is not only of many species, but also widely distributed, such as European black pine (P. nigra), European red pine (P. sylvestris), European mountain pine (P. mugo), bank pine (P. banksiana), twisted leaf pine (P. contorta), and Pinus tabulaeformis, Pinus sylvestris var. mongolica, Pinus tabulaeformis and Pinus tabulaeformis in North and Northwest China. Pinus massoniana, Pinus taiwanensis, Pinus elliottii, Pinus massoniana, Pinus elliottii, Pinus massoniana, Pinus taiwanensis, Pinus massoniana, Pinus massoniana and Pinus elliotti 3 / 3 needles of a bunch of Pinus thunbergii are distributed in the United States, Pinus elliottii, Pinus elliottii and so on. There are few pine species in a bunch of 4 / 4 needles, only in California, USA. In addition, egg pine and Lavidson pine are four-or five-needle bundles. 5 / 5 needles are widely distributed, including North American pine (P. strobus), Swiss five-leaf pine (P. cembra), northeast Korean pine, northwest Huashan pine, Qiao pine, Guangdong pine, Anhui five-needle pine, Dabie mountain five-needle pine, Pinus elliottii, Taiwan fruit pine and so on. The difference of pine needles is helpful for us to classify and identify pine trees and understand the ecological characteristics of pine trees. Usually, five-needle pine is suitable for humid environment and has strict requirements on soil, while two-needle or three-needle pine trees are more resistant to drought and can grow on thinner soil. For example, Pinus tabulaeformis with two needles has strong adaptability to continental climate and atmospheric drought, of course, it is also related to the depression of its needle stomatal zone. The waxy surface of the leaf can reduce partial evaporation.

China is one of the countries with the richest species of gymnosperms in the world. Only from the perspective of Pinaceae, it can fully show that Huaxia is a veritable "hometown of gymnosperms". In the vast mountain forest wilderness of China, there are not only luxuriant pine, larch, spruce and fir forests, but also many precious and rare pine species hidden in some deep mountain forests. Among the first batch of rare and endangered plants announced by the state, there are 39 species of Pinaceae, accounting for 389 species. Among them, silver fir is listed as the first-class key protected plant, 17 species such as Baishanzu fir and Pinus elliottii are listed as the second-class key protected plant, and 21 species such as Pinus elliottii and Pinus sylvestris var. mongolica are listed as the third-class key protected plant. I hope the above information about the types of pine trees will be helpful to you. Please stay tuned for more. Green plant species and fengshui next: the role of pine trees are covered with treasures all over the body