The growth habits of elm, the difference between elm and elm

Elm (Latin name: ulmus parvifolia jacq) is also known as: elm parvifolia.

It is a plant of the Ulmus family, Ulmus family, the tree shape is beautiful, the posture is chic, the bark is mottled, the branches and leaves are fine, it is very suitable for solitary planting, cluster planting in the courtyard, or with pavilions and pavilions, mountain stone configuration. It can also be used as a tree species for greening residential buildings in mining areas. The elm tree is hard and can be used for industrial timber; The stem bark fiber is strong and can be used as rope and man-made fiber; Roots, skins, and young leaves have the effect of reducing swelling and relieving pain, detoxifying and treating heat, and external application to treat water and fire burns; Leaves make soil pesticides, which can kill red spiders.

Growth habits. It grows in plains, hills, slopes and valleys. Light-loving, drought-tolerant, can grow on acidic, neutral and alkaline soils, but the most suitable habitat is the neutral soil with a warm climate, fertile soil and good drainage. [1] Strong resistance to toxic gases and dust.

This kind of bonsai is elm! It is particularly easy to raise, and I have planted it for many years! I found that as long as you pay attention not to the sun in summer, you must see the light in winter!

Then water, see dry, see wet! As for fertilization, the sesame sauce residue is diluted after it is rotted, pay attention to the thin fertilizer applied frequently! Elm is not strict with soil quality!

My vegetable garden soil, mixed with one-third of the rotten cow dung, is very good!

The bark of elm and elm is different, and the bark of elm is smoother than that of elm; The fruit of elm is blue-green, and the fruit of elm is red or dark yellow. And the leaves of elm are smoother than those of elm, and the color is lighter; Elm trees are taller than elms, and elm trees are highly resistant to wind.

Elm There is a big difference between the bark of elm and elm, the bark of elm is smooth, there are no unwanted cracks, and the color is mostly cyan or dark cyan; The bark of the elm tree has longitudinal fissures, and the bark color is pale white when it is young and dark brown in adulthood.

Elm The difference between elm and elm is that the fruit shape is different, and their fruit is very different; The fruit of elm is mostly drupe, basically without stalk on it, the color of the fruit is blue-green, with a little thorn at the top, and there are deep concaves; Elm trees are mostly winged fruits, and the color of the fruit is mostly red or dark yellow, and the petioles are very long at both ends.

Elm Ulmus and Elm also have subtle differences, the leaves of Elm are mostly three-veined, the leaves are small and smooth on the surface, the base of the leaves is slightly sloping, and the leaf color is green and bright; However, the leaves of the elm tree are different, its surface is not smooth, with a hint of abruptness, and the leaf color is a little darker green than the elm leaves.

Elm is a light-loving tree, with a certain drought tolerance and cold resistance, like to grow in fertile land, can also grow in barren land, 30-year-old tree height is about 17 meters; The elm tree has a different growth habit, it prefers to grow in loose and breathable sandy soil, and is generally more than 20 meters high, and has a strong resistance to wind.

Explanation of elm deciduous tree. The leaves are alternate, with pale yellow florets in autumn, and winged fruits, oval-shaped. The wood is hard and dense, and can be used to make wheels, farm tools, etc. Also written "Tandan Langyu", see Ming Li Shizhen's "Compendium of Materia Medica, Mu Er, Langyu".

Word decomposition Explanation of 榔 榔 á hammer. Elm is a deciduous tree with hard and dense wood. Radical :

Wood; Interpretation of elm Ulm ú deciduous tree, solid and round, solid wood, can be used to make utensils or for construction: elm pod. Yu Qian Er (i.e. "Yu Pod", like a small copper coin).

Elm surface (made of elm bark grinding powder to delay disturbance, used as an adhesive). Yusai (in ancient times, it was called Biansai Zhiyu, so it was called "Yusai"). Mulberry elm twilight view.

Surname. 。

Of course, elm trees will bloom.

Elm flowers bloom in autumn, 3 to 6 in clusters of leaf veins or arranged in clusters of umbrella inflorescences, perianth cup-shaped above, tubular-shaped below, tepal 4, deeply lobed to the base or near the base of the cup-shaped perianth, peduncle very short, sparsely hairy.

The flowering and fruiting period is from August to October.

Elm cultivation techniques.

Methods of reproduction. The propagation methods are mainly sowing propagation and cuttings propagation, but it is difficult to obtain the seeds of Elmus elm, and the survival rate is only 20% to 40% by the general cutting method.

Select cuttings. Elm elm cuttings are harvested from the 1-year-old and 2-year-old branches of perennial stump bonsai, and the cuttings are 7 to 8 cm long.

Handling of cuttings.

In order to solve the problem that elm is not easy to take root, different chemical treatments were carried out before cuttings.

Cuttings method. First, the substrate in the slotting bed is paved and flattened, and then the cuttings are inserted vertically into the loose substrate, with a plant spacing of 4cm and a row spacing of 8cm. The depth of the cuttings is 1 3 of the cuttings. Then spray to make the substrate absorb water and sink, and adhere to the cuttings.

Management of cuttings.

A pump room is set up on the east side of the spray slotting bed, and a pressurized pump is placed, which can control the spray at any time according to the weather conditions and the temperature in the slotting bed. The air humidity in the slotting bed is generally maintained at about 85%.

After potting rooting, the elm will be unearthed from the pot, the cultivation medium is still made of cottonseed skin, and after the pot, it will be grouped and placed in the cutting bed, so that it is still kept in the good environment when cuttings, and after 20 days, it will be moved to the greenhouse.

In the process of rooting and germination, fertilization cuttings consume a large amount of nutrients stored in the branches and need to be replenished urgently. Therefore, 10 days after the cuttings are potted, sesame sauce water is applied to water to meet the needs of their root system and plant growth and development.

Conservation management and ornamentation of elm bonsai.

1) Maintenance and management Place: Elm should be placed in a sunny place with good air circulation. There is no need for shade in summer, and it can be placed outdoors in winter, and in order to prevent the potting soil from drying and freezing, it can be buried in the soil.

Watering: Elm likes moisture, watering should be sufficient, the temperature is high and the light is strong in summer, watering once in the morning and evening, but do not make the pot water. Watering can be less in autumn, and if you are buried in potting soil in winter, you don't need to water.

Fertilization: Apply manure or cake fertilizer as base fertilizer once in winter, and apply thin organic fertilizer every half a month in April and October (except for the rainy season) to maintain the needs of normal growth nutrients. Nitrogen and potassium fertilizers are the main fertilizers.

Pruning: Elm elm branches and leaves grow fast, in order to maintain the shape of the bonsai should be pruned frequently, generally when the new bud branches are elongated to 5 6 cm, only 2 3 leaves remain, and the rest are cut off. In order to control growth, budding and tip removal can also be carried out at any time.

Repotting: Every 2 to 3 years, preferably in spring before bud break, or in autumn. When turning the pot, you can remove about 1b2 old soil, and cut off part of the old roots, and use fertile and loose culture soil.

Pest control: There are many elm insect pests, such as common elm goldenrod insects, scale insects, longhorn beetles, spiny moths and demoiselle moths. It can be sprayed with 80 dichlorvos 1500 times liquid for prevention and control; The longhorn beetle damages the trunk of the tree, and the wormholes can be plugged with stone sulfur mixture.

2) Ornamental elm tree posture chic, bark speckled scales, dry branches, soft branches, when the new leaves are first released, full of tender green, for the best viewing period. It can also be used as a cold tree after the leaves fall in autumn. In addition, in early autumn, all the old leaves are removed, and a fast-acting nitrogen fertilizer is applied, and new leaves can grow after about half a month, so that there are two best viewing periods a year.

The old pile bonsai, the rhizome is ancient, the posture is simple, such as dead wood in spring, it is still grandiose, and it is the most resistant to appreciation.

Agriculture, agriculture, life, aquaculture, elm, rural areas, how to do bonsai of elm microphylla? The master teaches you a simple and practical method, and the effect is outstanding.

The leaf margin of elm is single-serrate, and the leaf margin of elm is heavily serrate.