Scientific name: Eupatorium Adenophorum Spreng
Section name: Compositae
English name:Crofton Weed
It has been listed as the first batch of invasive alien species in China and ranked first.
Eupatorium adenophorum, also known as damage grass, liberated grass, is a perennial herb or subshrub of Asteraceae. Mexican origin of the Americas is named Eupatorium adenophorum because of its purple stems and petioles.
Features purple stem, glandular pubescent. Leaves opposite, ovate-triangular, margin coarsely serrate. Capitulum, up to 6 mm in diameter, arranged in a coronet-like shape, total three or four layers of bracts, and white flowers. Plant height 1 meter to 2.5 meters. Sexual or asexual reproduction. Each plant can produce about 10,000 achenes a year, and the crown hairs spread with the wind. Rhizomes are developed and can rely on powerful rhizomes to spread rapidly. Strong adaptability, drought, inhospitable wasteland, and even the stone seam and the roof can grow.
Harmfulness First discovered in southern Yunnan in 1935, it spreads from south to north with river valleys, highways, and railways. Invasion of farmland, woodland, competition with crops and trees for water, fertilizer, sunlight, and space. It can secrete sensations and crowd out neighboring species of plants; it can block drainage channels and obstruct traffic; the whole plant is poisonous, and even worse, the Eupatorium adenophorum There are many fine hairs on the seeds. If the cows can't digest them, they can get serious stomach problems, become more and more unhealthy, and endanger livestock husbandry.
Control Method 1 Biological Control. The fruit flies of E. zeae have obvious inhibitory effects on plant growth, and the parasitic rate in the wild can reach more than 50%. 2 alternative controls. The use of arm grass, red clover, bermuda roots and other plants to control the replacement has a certain effect. 3 chemical prevention. More than 10 herbicides such as 2,4-D, glyphosate, diquat, and dicamba have a certain control effect on the aerial parts of Eupatorium adenophorum, but its root control effect is poor.
Eupatorium is a member of the genus Asteraceae and Eupatorium, a perennial herb. The lower stem is hardened and aged. It is semi-shrubs, 0.8-1.2 m high, and up to 2.5 m in height. The stems are dark purple-brown, gray-rusted, and leaf-to-crest. , leaf blade prismate, capitate, achenes pentagonal, crested. It blooms from February to March each year, and the seed matures in April and May. The seeds are small and have bristles. They can drift with the wind and have huge seed yields. Each year, about 10,000 seeds are produced per year.
Eupatorium adenophorum is native to Mexico and Costa Rica in the Americas. Eupatorium adenophorum was introduced from the China-Burma border to southern Yunnan in the 1940s. To date, 80% of Yunnan's land has Eupatorium adenophorum distribution. In the southwest, Yunnan, Guizhou, Sichuan, Guangxi, and Tibet all have distributions. They spread northwards and eastwards at a rate of about 10-30 kilometers per year.
Eupatorium adenophorum has medicinal value
Eupatorium adenophorum can be used for the treatment of the following common diseases, and has a good effect, and is now collected as follows:
1. Itching, bumps caused by mosquito bites, feet in Hong Kong, paddy field dermatitis, and scabs, taking appropriate amount of fresh leaves of Eupatorium adenophorum rubbed the affected area, can play the role of swelling and itching.
2. Unexplained cause of the skin to find measles, take fresh stems and leaves Eupatorium 500g, Jianshui wash the affected area, generally 2 to 4 days can be cured.
3. Anti-inflammatory and hemostatic. For general simple traumatic bleeding, take the fresh leaves of E. adenophorum and apply it to the wound with a proper amount of rubbing. Apply it with a cloth and replace it once a day. This can be used as an anti-inflammatory and hemostatic effect.
Other effects
1. Dyes, a natural dye, can be dyed in yellow after being cooked in high temperature, used in national tie-dye, and can play a role in mosquito repellent and anti-inflammation.
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