Introduction to Baiguoshu:
Ginkgo biloba L. is a deciduous tree of Ginkgo, also known as Ginkgo, Gongsun, Jiaodu and Pufan. Ginkgo biloba is the oldest seed plant in relict plant. Other plants in the same class are extinct and are called living fossils. Ginkgo biloba was born hundreds of millions of years ago. Ginkgo biloba is sparse, and a century-old tree is rare. There are 26 varieties and varieties: ginkgo, ginkgo, ginkgo, ginkgo.
Ginkgo tree, also known as ginkgo tree, grows slowly and has a very long life. Under natural conditions, ginkgo trees need more than 20 years from planting to fruiting, and it takes 40 years to bear a large number of fruits. Therefore, it is nicknamed "Gongsun Tree", which means "edible for the masses". It is the birthday star on the tree and was called "Ginkgo biloba" in ancient times. Ginkgo tree has ornamental, economic and medicinal value. Ginkgo biloba is the oldest gymnosperm left after the Quaternary Glacier Movement and one of the most precious tree species in the world, so it is known as the "living fossil" in the plant world.
Morphological characteristics of ginkgo tree;
Ginkgo biloba is a deciduous tree with a DBH of 4 meters. The bark of young trees is nearly smooth, light gray, and the bark of big trees is grayish brown, irregular and rough longitudinally. There are long branches and slow-growing short branches.
The crowns of young and mature trees are conical, while the crowns of old trees are roughly oval. Branches are nearly whorled and extend obliquely upward (the big branches of female plants are often more developed than those of male plants); One-year-old branches are light brown, gray after two years, with fine longitudinal cracks; Short branches are densely covered with leaves, dark gray, and long branches can also grow on short branches; Winter buds are yellowish brown, often oval, and the top is blunt and round.
Leaves alternate, scattered radially on long branches, 3-5 clusters on short branches, slender petiole, fan-shaped, light green on both sides, hairless, with many branched parallel veinlets, notched or 2-lobed wide top edge, 5-8 (~ 15) cm wide, and many branched veinlets. Scattered on long branches and clustered on short branches.
Growth habits of ginkgo trees;
Ginkgo biloba is a rare tree species left over from Mesozoic era, and it is a specialty of China. There are only wild trees in Tianmu Mountain, Zhejiang. They are born in acidic yellow soil with good drainage at an altitude of 500- 1000 meters, and often mix with coniferous and broad-leaved trees such as Cryptomeria fortunei, Torreya grandis and Orchidaceae, and grow vigorously. Ginkgo biloba is a positive tree, which likes deep loam with suitable moisture and good drainage, and is suitable for growing in subtropical monsoon region with superior hydrothermal conditions.
It can grow well in acidic soil (pH4.5) and calcareous soil (pH8.0), and neutral or slightly acidic soil is the most suitable. It can endure drought in places that are intolerant of stagnant water, but it can't grow well in places that are too dry and rocky slopes or with low humidity. The initial growth is slow and the tillering is vigorous. Female plants generally begin to bear fruit in about 20 years, and trees that have been 500 years old can still bear fruit normally. Generally, it germinates from late March to early April, blooms from early April to mid-April, and the seeds mature 10 from late September to early June, and shed leaves from late June to 10.
Propagation technology of ginkgo tree;
Cutting propagation: Cutting propagation can be divided into old branch cutting and tender branch cutting. Old branch cutting is suitable for the propagation of large-scale green seedlings, and tender branch cutting is suitable for the propagation of a small number of seedlings in families or garden units. Cuttings of old branches are usually carried out in March-April in spring, and high-quality branches of 1~2 years old are picked from finished nursery or from big trees.
Ramet propagation: ramet propagation is generally used to cultivate rootstocks and green seedlings. Ginkgo biloba is easy to germinate, especially for 10 ~20 years old trees. Remove the soil around the rhizosphere, cut the tillers with fibrous roots from the mother plant with a knife and plant them separately. All Populus euphratica can be propagated by tillering in spring.
Grafting propagation: Grafting propagation is mostly used in fruit production. Green branch grafting can be carried out from late May to early August, but not in hot and dry weather conditions, especially at noon on sunny days and rainy days.
Sowing propagation: Sowing propagation is mostly used for planting seedlings or making bonsai in a large area in Cong Company. After harvesting the seeds in autumn, remove the seed coat and dry the seeds with the peel for sowing in the next winter or spring.
Ornamental value of ginkgo tree;
Ginkgo biloba is a famous long-lived tree species with strong vitality, peculiar leaf shape and easy grafting, reproduction and pruning. It is a high-quality material for making bonsai, and the bonsai made of ginkgo milk is a must, with high ornamental value and economic value. Ginkgo biloba is a common tree species in bonsai in China. Ginkgo bonsai has become a must among China bonsai because of its thick stems, bent branches, exposed roots, unique shape, vigorous and unique taste.
The lush summer and golden autumn give people a sense of precipitousness, grandeur and elegance, which attracts more and more attention and is known as "living art sculpture". According to people's different appreciation requirements, bonsai mainly includes ornamental bonsai, foliage bonsai and stump bonsai.
The above is the picture of ginkgo tree and the related introduction of ginkgo tree that I share with you. I hope it helps you.