What are the types of elm trees, and what are the types of elm trees?

1. Spring elm: deciduous tree, from the Northeast, gray skin, oval leaves, pale yellow flowers, woody medium hard. The reference value of the bulk density of wet wood is about 702 kg cubic meters; The harvested trees, which resemble green elm, are used to make furniture, house decoration, plywood, vehicle and ship equipment, and industrial timber.

2. Split-leaf elm: the material is basically the same as above, and the variability is large.

3. Green elm: deciduous tree, produced in Northeast China, the reference value of wet wood bulk density is about 696 kg cubic meters, the wood is compact, the heartwood is hard, the pattern is beautiful, the medium wood is smooth and beautiful, the sapwood is hard and soft and elastic, and the trees after felling are suitable for making furniture, decoration, plywood, vehicle and ship equipment, carving or industrial timber.

4. Yellow elm: deciduous trees, Shanxi, Northeast and other real estate, the reference value of wet wood bulk density is about 660 kilograms, the wood is less variable than that of green elm, the texture is fine and uniform, and the wood color is yellow-brown. The felled trees are suitable for furniture decoration materials, plywood, vehicle and ship equipment, and industrial materials.

5. White elm: also known as elm. Gu Sun Yan:

The name of the elm white is often used as the beam of the heavy house; Wen Xuan Jin Zuo Taichong Wei Dufu:; Twist the knot, and stack it. Baiyu is produced in Anhui, and the reference value of bulk density of wet wood is about 767 kg cubic meters; Shanxi, Hebei, Northeast, Shandong, Jiangsu and other places are available.

The bark is gray-brown, the fissures are shallow, the inner skin is flexible, the sapwood is narrow, the middle wood is dark purple-gray, the heartwood is yellow, the texture is beautiful and straight, the structure is coarse, and it is easy to crack; Wood is suitable for furniture, vehicles, tools, packaging and other materials.

6. Northeast elm: from Northeast China, the bark is gray-brown, the groove is shallow cracked, the inner skin is light yellow-red, and the reference value of the bulk density of wet wood is about 681 kg cubic meters; After felling, the wood sapwood is dark yellow, the medium wood is gray-yellow-brown, and the heartwood is hard and bright; The wood texture is thick and straight, the pattern is beautiful, the wood is heavy, the sawing board surface is hairy, bright after planing, and similar to ash after painting, but not as hard and soft as the texture of ash; Wood is used in construction, vehicles, plywood, furniture and utensils.

Elms are inherently jagged leaves. It's easy to raise, just water less. You need more arid soil, and you don't need fertilizer.

There are many species of elm, such as dragon's claw elm, weeping elm, American elm, and spring elm. The trunk of Elm d'Ulm is short, and it is an ornamental landscape tree in the north; Weeping elm does not have high water requirements and is often planted as a landscaping tree; American elm has a strong texture and is generally only planted as an ornamental elm tree.

Four species of elm1. Dragon's claw elm

Also known as inverted elm, it is a variant of the elm tree that can grow up to 25 meters tall and usually blooms first and then grows leaves, it is very adaptable and can survive at an altitude of 1,848 meters. The trunk of the elm is shorter than that of other elms, and it is a very ornamental landscape tree in the north.

2. Weeping elm

Weeping elm is one of the species of elm tree, it has many branches, the bark is grayish-white, it can survive in an environment of minus 35, the water requirement is not high, and the annual rainfall of 200ml can survive. Weeping elm is easy to breed and is therefore often planted as a landscaping tree.

3. American elm

American elm is native to North America, with a trunk up to 40 meters and gray bark, and is planted in Jiangsu, Beijing and other regions of China. American elm trunks mostly grow haphazardly, and straight American elm can rarely be seen. American elm has a strong texture and is generally only planted as an ornamental elm tree.

4. Spring elm

Spring elm often grows in rivers and streams with water, and has low requirements for soil, and is suitable for planting in fertile and moist sandy loam soil. When it is an adult, it can be made into vehicles, boats, and floors, and has a high use value.

Weeping elm: It can grow well in poor, saline soil, and is cold and drought resistant. Elm macrophylla:

The leaves are broad, with stripes on the leaf surface and serrated leaf edges. Elm del claw: It is one of the main tree species for garden greening and ornamentation.

Black Elm: Commonly found in limestone mountains or valleys. Hangzhou Yu:

It is possible to make furniture, flooring, etc.

1. Weeping elm

Weeping elm is mostly distributed in the northeast and northwest, the plant grows rapidly, is cold and drought resistant, has developed lateral roots and strong vitality, can grow well in poor and saline-alkali soil, its bark is gray, there are longitudinal cracks on the surface, and the leaves are ovate-oval.

2. Big-leaved elm

Big-leaved elm mainly grows in northeast Xinjiang and other places, the plant height is about 30 meters, the branches are straight as a whole, because the leaves are wide, there are stripes on the leaf surface, and the leaf edge has serrations, so it is named big-leaved elm, its growth is vigorous, and it is mostly used to prevent wind and sand.

3. Dragon's claw elm

Elm is an arbor, with fast growth rate, natural shape, umbrella-shaped and conical columnar, smooth bark, gray-brown, curled and drooping branches, and oval-ovate leaves, smooth and bright, flowering between March and June, one of the main tree species for garden greening and ornamentation.

4. Black elm

Black elm is a plant of the elm family, also known as mountain elm, hot river elm, northeast black elm, distributed in Henan, Shanxi, Liaoning, Hebei, Shaanxi and other places in Chinese mainland, growing at an altitude of 500 meters, commonly found in limestone mountains or valleys, has not been artificially introduced and cultivated.

5. Hangzhou elm

Hangzhou elm is a deciduous tree, the height can reach more than 20 meters, mainly distributed in the south of the Yangtze River, after the Hangzhou elm matures, its wood is widely used, can be made into furniture, flooring, vehicles and buildings.

There are many varieties of elms. There are about 40 species of elm in the world, and there are 25 and 6 varieties of elm in our country. The common varieties include Elm long-ordered, Ulmus americana, Ulmus spp., Ulmus vulgaris, Ulmus vulgaris, Ulmus macrocarpensis, Ulmus debarked, Ulmus hangzhou, Ulmus schizophylla, Ulmus Xingshan, Ulmus Shu, Ulmus Alishan, Ulmus white and other varieties.

It is planted all over the country, mostly in the north of the Yangtze River Basin, such as Hebei, Shandong, Henan, Shanxi, Inner Mongolia, Shaanxi, Gansu and Ningxia. In addition, elm has high ornamental, economic and medicinal value, and is also one of the main tree species in China for windbreak, soil and water conservation forests and saline-alkali land afforestation.

Elm trees are mostly adaptable and have low requirements for the growing environment. In addition, it has a fast growth rate, a long lifespan, and low planting conditions, so it is relatively easy to feed, so there are few extremely valuable varieties. However, there are some varieties of elm trees that have a greater impact on people's lives.

Starting from the practical value and economic value, the more precious elm varieties mainly include Drunken Ulmus, Ulmus Bigfruit, Hangzhou Ulmus, Slobye Ulmus, Xingshan Ulmus, White Ulmus, Longclaw Ulmus, Dry Ulmus and so on. Most of them can be used for utensils, furniture and other materials, or can be used for afforestation and urban landscape tree species in the desert of Northwest China, North China and Huaibei Plain, hills and barren mountains in Northeast China, sandy land and coastal saline-alkali land, and have high ornamental value.