It can be propagated by harvesting and cutting. Harvest in March-April. Soak the seeds in warm soup or pile them with cow dung to accelerate germination. Cutting propagation is carried out in March, and the weak branches of the previous year are cut off. Compared with common broad-leaved trees, the survival rate can reach 80-90%.

For a warm, humid and sunny environment, ash can be maintained in a sunny and well-ventilated place even in midsummer. Watering should be done frequently during the growing period, the soil in the basin should be moist to prevent drought, and water should be sprayed on the branches and leaves frequently to increase the air humidity, so as to make the leaves bright and moist and prevent the leaf edge from withering. Apply decomposed dilute liquid fertilizer once every 20 days or so to provide sufficient nutrition and make plants grow vigorously. Overwintering indoors or outdoors in the sun in summer, properly watering to prevent the basin soil from freezing and accumulating water. It can safely overwinter at about 0℃. Change the basin once every two years in the spring, and the basin soil should be loose and fertile sand with rich humus and good air permeability. It has a strong germination ability for ash. When it grows, it is necessary to wipe off the extra branches and buds on the trunk at any time and often start work, so as to not only adhere to the beauty of bonsai, but also prevent excessive consumption of nutrients and thickening of branches. The best time to enjoy the ash bonsai is after it grows in New Ye Gang, so all the old leaves can be removed in mid-August to promote the development of new leaves. Apply fertilizer water to rotten pancakes five or six days before picking leaves, and then apply liquid fertilizer after new leaves grow. At present, water and fertilizer management has been strengthened. During the National Day, its plant shape was full, its leaves were thick and its color was dark green. After defoliation in summer, the plants should be reshaped once, and branches that affect the tree shape, such as pests, interspersed branches, weak branches and parallel interspersed branches, should be cut off to make the bonsai more beautiful.

The propagation of Fraxinus ash is mainly cuttage, which can be stopped all year round, and the survival rate is the highest in winter and spring. You can choose beautiful branches as cuttings, dip them in rooting powder and cut them with sand, which is easy to take root. Transplanting usually stops in the dormant period from summer to early spring before germination. Before planting, stop shaping the stump, cut off excess branches and roots, and smooth the wound. Stump with serious water loss should be soaked in clear water for 24 hours before planting, or soaked in rooting agent (such as rooting powder and vitamin B 12) solution for a period of time. First, plant it in loose and breathable plain sandy soil without much nutrition to "raise the blank" to facilitate the recovery and growth of the root system and water it. At present, the soil is wet and there is no water accumulation, so water is often sprayed on the branches, and 50% to 80% shading nets are used to stop raising. Under normal circumstances, in late spring and early summer, stumps will sprout one after another. In early August, the sunshade net can be removed to keep out the sun.

main application

1, excellent timber tree species. The experimental results of the physical and mechanical properties of Fraxinus mandshurica wood show that its most prominent characteristics are beige, beautiful patterns, fine texture, solid material, strong rigidity, high toughness, small deformation, no scratches and cracks, strong corrosion resistance, and its quality coefficient is as high as 2500. Semi-air-dried wood or wet wood can be painted and processed, so it is an ideal high-grade furniture material. In addition, compared with the wood of the same tree species, the mechanical goals of many Woods are higher than that of Fraxinus mandshurica, and their hardness is particularly prominent. Wood is a primary material with luster and elasticity, which is suitable for primary furniture. In particular, it has the technological characteristics of cutting, processing and painting.

2. Ideal greening tree species. Ash has dense branches and leaves and a beautiful crown. It is a good tree species for street trees and "greening all around", and can also be planted in clumps or in patches. When young, the tiller has thorns and strong germination, which is an ideal hedge or barbed fence data. The arrangement of ash trees in parks, scenic spots and urban institutions not only has beautiful, solemn and elegant ingenious effects, but also has the characteristics of good shading, good hue, smoke and dust resistance, barren resistance and no stains, which is deeply loved by the masses.

3. Good ecological tree species. Ash tree has beautiful tree shape, dense branches and leaves, green leaves, beautiful leaf thickness, few pests and diseases and strong adaptability. The lowest temperature is-17.3℃, and there is no adverse reaction within the range of the highest temperature of 40.3℃. It has strong ability to germinate ash buds, dense branches and leaves, vigorous growth and good shading effect. The root system is developed and complicated, and it has strong ability of soil fixation and water conservation. It is an excellent tree species for soil and water conservation forest and water conservation forest. Whether it's raising roots and exposing claws or flooding and fertilizing, it can adapt. It plays an important role in trees modeling's beauty, protecting the ecological balance of leaves, biodiversity and regulating the ecological balance.

4. Precious bonsai tree species. Its simple and colorful trunk, short branches, thick and sparse leaves, strong germination, pruning resistance, soft branches and easy modeling are good materials for making bonsai. According to the shape of the stump, bonsai can be made in different ways, such as straight dry type, bent dry type, inclined dry type, double dry type, cliff type, waterfront type and jungle type. The roots and stems of Fraxinus mandshurica, which have grown for many years, are vigorous, delicate and colorful, and can be carved into mountain shapes and strange stone shapes, which has high ornamental value. Stump Stump is found to be a common material of stump bonsai, and its compound leaves are easy to form a crown that meets the requirements, which is an inferior product for making bonsai. After artistic modeling, it is intoxicating with unparalleled artistic charm, giving people beautiful enjoyment and cultivating physical sentiment. The bonsai made of ash, whether semi-finished or finished, has the artistic effect of solemnity, fortitude, aging, grace, elegant dancing or flying. Spring, autumn and winter are flourishing, and the scene is mixed, unique and spectacular; In summer, after the leaves fall, they are bent and withered, proudly vigorous, which can be described as "flat painting silent poetry"

Known as a "living fossil", Japanese ash, as a rare animal, is the first choice for viewing. It is the only Japanese ash tree in the world today, and it is a rare and precious tree species, commonly known as "tree across the street" and "homesick tree". It is a leader in the world's scenic spots, bonsai and root carving families, and is known as "the first section of Chutian" and "the king of bonsai". Since 1986 made its debut in the bonsai exhibition, it has won awards in various international and international competitions, and has been praised as "the best in the world" by the bonsai industry. 1989 won the new species discovery science and technology award and the third prize of bonsai in the second national flower Expo in Beijing. 1999 Kunming World Horticultural Exposition won the gold medal in animal category.

Academic value

Lateral inflorescence group of ash tree. According to foreign literatures, there are only 1 species and 2 varieties in this subgroup, and their names and distribution are as follows: Haloxylon ammodendron (F. XONTHYLOIDES (Don) DC) DC. It is native to Afghanistan, Pakistan, India and the Himalayas. Vinz. Produced in China, Tibet and neighboring Afghanistan, India, the southeastern Himalayas, as far as southwest Africa; Only in southwest Africa. So far, no specimens and reports have been found in China, and ash has been found in Jingmen City, Hubei Province, far from the subgroup, which provides us with an extremely important and precious material.

Eight characteristics

(1) grows slowly and has a long life span of about 2000 years.

(2) The tree is beautiful in shape, intricate, aging and beautiful, and has high appreciation value.

(3) Beautiful leaf thickness, green color, sparse nodes, vertical symmetry, picking resistance, pruning resistance and excellent shape.

(4) The tree is thin and firm, milky white and bright in color, which is the best material for root carving.

(5) Dense branches, shady ground, serious and elegant, polluting the air, it is the most ideal greening, ugly and polluting tree species in parks, scenic spots, urban streets, administrative organs, enterprises, colleges and universities, and family courtyards.

(6) Strong compliance. Various soils, fertilizers and climate adapt to growth; High temperature -20.3℃ and low temperature -42.3℃ have no adverse reactions, and both the north and the south can grow normally.

(7) Strong vitality, vigorous germination, rooting, cutting and harvesting can all be used as seedlings.

(8) Management is complicated. Smoke prevention, no purification, drought and flood resistance, less pests and diseases; Whether it is to raise roots and expose claws, or to irrigate and fertilize, it all grows with it.

In addition, the ancient sumac trees bloom early, flourish in summer and autumn, and flourish in summer. Planting ash bonsai can not only nourish the heart and beautify the eyes, but also cultivate the sentiment, and combine work with rest and give up halfway. Ash tree is of great breeding and collection value because of its own advantages and unlimited quantity. At present, the "living fossil" that has been awakened for tens of thousands of years is entering the international marketing market of 2 1 century with a lovely charm.

Bonsai advantage

① rapid growth and molding;

② The branches are soft and in good shape;

③ Short nodes, dense branches and small leaves;

(4) Fast cutting propagation in four seasons;

⑤ Species are precious.

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