What landscape trees are suitable for planting in Huanghuai Plain?

Gleditsia sinensis is a leguminous plant and belongs to deciduous trees. The height of the tree can reach 65,438+05m-20m, the crown can reach 65,438+05m, the spines are thick reddish brown, often branched, with bipinnately compound leaves, 4 -7 pairs of leaflets, ovate, ovate-lanceolate or ovoid, 3 cm -8 cm long and 650 cm wide. Flowers are heterozygous, forming axillary terminal racemes. The whole flowers are villous, calyx bell-shaped, lobes 4, ovate-lanceolate, petals 4, yellowish white, oval or oblong, stamens 8, long 4, short 4, ovary strip-shaped, flat, pods straight and flat, shiny, dark purple, covered with white powder, and long1 Spines are multi-branched, the main thorn is cylindrical, 5 cm-15 cm long, the base is about 8 mm-12 mm thick, the end is sharp, the branched thorns are generally 1.5 cm -7 cm long, sometimes divided into small thorns, the surface is brownish purple, the tip is reddish brown, smooth or with fine wrinkles, and it is hard and not easy to break. It blooms in May every year, and the fruit ripens and has thorns in June 5438+ 10.

Medicinal value of Gleditsia sinensis;

1, Gleditsia sinensis: The main components are triterpenoid saponin, tannin, wax alcohol, eicosane, stigmasterol, sitosterol, etc.

Indications: dispelling pathogenic wind and resolving phlegm, removing dampness and toxic materials, killing insects, and treating apoplexy, mouth and eye deviation, headache due to head wind, cough with excessive phlegm, bloody stool due to intestinal wind, diarrhea, swelling and pain, toxic stool, sores, tinea and furuncle.

2. Gleditsia sinensis: The main components contain flavonoid glycosides, phenols and amino acids.

Indications: detoxification, detumescence, pus discharge, and treatment of swelling and pain, furuncle, tinea and sore, and retained placenta.

3. Gleditsia sinensis leaves, roots and bark: containing a small amount of Gleditsia sinensis alkaloids.

Indications: hypertension, bronchial asthma, peptic ulcer and chronic cholecystitis.

4, Gleditsia sinensis seeds: sweet, warm, low toxicity, moistening dryness, relaxing bowels, dispelling wind and reducing swelling.

Economic value of Gleditsia sinensis;

1, which can extract a variety of chemical raw materials for washing and dyeing supplies.

2. Gleditsia sinensis is hard and tender, and it is a superior tree species for making furniture.

3. Gleditsia sinensis has dense leaves, beautiful flowers, good tree shape and few pests and diseases, which is another excellent variety of urban greening and street trees.

The growing environment of young Gleditsia sinensis;

Gleditsia sinensis is drought-resistant, bitter and summer-resistant, cold-resistant, with developed roots, long tree age (500 years) and tall crown, which is to return farmland to forests and protect the ecological environment.

Suitable planting areas are: Shanxi, Shandong, Henan, Gansu, Hebei, Inner Mongolia, Jiangsu, Hubei, Hunan, Guangdong, Guangxi, Sichuan, Anhui, Zhejiang, Guizhou, Shaanxi, Jiangxi, Yunnan and Northeast China.

Cultivation method of young Gleditsia sinensis:

Planting: Breeding with seeds. When raising seedlings, open the border with a width of 1.3m, spread a layer of decomposed compost as base fertilizer, open horizontal ditches with a depth of 6 cm-10 cm at a row spacing of 33cm, sow 1 seed every 4cm-6cm, apply human and animal manure after sowing, and cover the border with plant ash. Water frequently to keep the humidity. After the seedlings are fully grown, apply human and animal manure water in shallow water, and then remove the core and topdressing for 2 -3 times. Topdressing management 1 -2 times in the second year, and transplanting after autumn. The transplanting field can be opened to a height of 7 meters. Before planting, the seedlings can be dug up, trimmed slightly, planted with/kloc-0 seedlings per hole, covered with soil and compacted. Finally, you can loosen the soil to make it slightly higher than the ground and water the roots.

Field management: 3-4 years after planting, loosen soil and weed every year, and apply plant ash or muck fertilizer to promote rapid growth.

Climate and environment: I like warm and sunny areas, and the requirements for soil are not strict. As long as the drainage is good, mountains, flat dams and crevices in corners can be planted.

Miracle tree

The tuanhua tree cultivated in Menglun area of Xishuangbanna, also known as miracle tree, has a height of 30m, a straight trunk with a diameter of 80- 120 cm, a large and smooth crown, round leaves, horizontally extending lateral branches and good natural pruning. It has a beautiful golden trunk, uniform and fine texture structure, hard wood, insect resistance and no warping. The fastest growth rate, with an average annual height of 3-3.5 meters; It is 3-4 cm long and thick, and grows to 30-40 m high in 8- 10, and the volume per plant is about 1.5 m3. It is a rare fast-growing timber tree species in China. Moreover, it has amazing ability to resist dry and hot climate and barren land, and is known as "miracle tree" or "gem tree" in the world.