Eight cities in Wuhan besieged this yellow flower, which is a beautiful flower with bright colors, but it is actually a "devil's flower" that destroys native plants and crops. "Solidago canadensis" is an exotic species, and 8 departments in Wuhan besieged this Solidago canadensis.
Eight departments in Wuhan besieged this yellow flower 1 Recently, eight departments including Wuhan Agriculture and Rural Bureau jointly held a conference on the prevention and control of Solidago canadensis, demanding that the ground prevention and control tasks including farmland, roads and scenic spots be completed before165438+1October 20, so as to effectively control the spread and harmful effects.
The meeting also requested that if people find weeds with similar appearance when they go out, they can call to "report" (65683248, 65683287).
Look! There is just a small bright yellow flower below.
A bunch of yellow flowers like ears of rice.
Photo: Official WeChat account of Chen Shan Botanical Garden.
It is reported that Solidago canadensis is native to North America. Although the color is bright, it is actually a malignant weed. As an exotic species, it has the nickname of "Devil's Flower" and is extremely fertile.
Each independent plant can produce more than 20,000 seeds every year, and the seeds can spread and spread by wind, occupying the niche of local species through strong competitiveness, making local species lose their living space, releasing allelochemicals to inhibit the growth of other plants, forming a large-scale single-superior community and reducing species diversity. It will not only destroy the naturalness and integrity of the landscape, but also occupy farmland, vegetable fields and orchards, leading to the decline of crop quality and yield, and even lead to the abandonment of cultivated land. In view of this, Solidago canadensis is also called "overlord grass" and "poisonous grass", which means "yellow flowers bloom and flowers kill"!
It is understood that at 20 10.
"Solidago canadensis" is included.
List of the Second Batch of Alien Invasive Species in China
However, many netizens said:
I have seen such flowers in Shanghai!
In fact, studies have shown that
There are many native species in Shanghai.
Disappeared by the invasion of Solidago canadensis!
We must completely "surround" Solidago canadensis.
It's not easy!
Experts spend a lot of time these days. ...
It is understood that since 20 18, there have been more than five invention patents for the control of Solidago canadensis, such as replacing Solidago canadensis with wormwood and/or reed, covering it with organic wet garbage, treating it with biological compost preparation, etc ... Unfortunately, the effect does not seem as good as expected. Every autumn, Solidago canadensis can still be seen everywhere.
At the same time, some citizens said:
There is a kind of "Huang Yinghua" in the fresh cut flower market.
Similar in appearance to Solidago canadensis.
Raymond Wong
So, what is the relationship between the two?
In fact, there are two main sources of "Huang Yinghua" in the market, one is Solidago nobilis and the other is Solidago canadensis, but either classification belongs to Solidago canadensis complex.
Experts remind that although the probability of invasion harm caused by fresh cut flowers is small, the risks brought by this large-scale planting exist due to the market demand of fresh cut flowers. Therefore, the large-scale sale of "Huang Yinghua" should attract attention, at least don't throw it away.
The Eight Departments in Wuhan besieged this yellow flower, which is colorful, but it is actually a "devil's flower", destroying local plants and crops. Yesterday, the reporter learned from Wuhan Agriculture and Rural Bureau that the bureau held a joint meeting with eight departments, including Wuhan Garden and Forestry Bureau, Transportation Bureau, Ecological Environment Bureau and Wuhan Customs, to deploy and control this species called "Solidago canadensis", and at the same time appealed to the public to report this flower and get rid of it.
The reporter consulted authoritative information and learned that "Solidago canadensis" is an exotic species, mainly produced in Canada, the United States, Mexico and other places in North America. From 65438 to 0935, Solidago canadensis was introduced to China as an ornamental plant. Weeds produced after introduction mainly grow around floodplains, wasteland, roads, farmland and rural houses, and also invade orchards, corn fields, cotton fields, soybean fields, tea gardens, vegetable fields and pastures.
Because Solidago canadensis has strong reproductive ability and competes with native plants and crops for nutrients and water, it can be described as "nothing grows in the Solidago canadensis" and "flowers bloom and I fall", and it is called "ecological killer".
The "Solidago canadensis" displayed in the conference is a string of yellow flowers like ears of rice, like pale yellow grains of rice, which are currently in the flowering season. Widely appeared in urban and rural green areas, farmland, wasteland, highways, national highways and expressways in Wuhan, showing an explosive trend.
It is understood that the control scope of Solidago canadensis to be launched in Wuhan mainly includes all farmland, abandoned farmland, farmhouses, woodlands, wetlands, nature reserves, rivers, lakes, reservoir areas and coastlines, urban and rural green areas, expressways, national highways, provincial highways and railways, scenic spots and major scenic spots. All districts and departments in the city should complete the control task before165438+1October 20th to effectively control the spread and harmful effects.
According to the requirements, all districts and relevant departments in Wuhan will seize the key opportunity of seed control before maturity, quickly arrange personnel to conduct a comprehensive survey of the local distribution of this species, and organize forces to carry out clearance operations to ensure no dead ends and non-proliferation.
After the discovery of Solidago canadensis, relevant personnel will take measures such as manual eradication, multiple cropping, multiple cropping and chemical control according to local conditions. Sporadic plants should be thoroughly removed from their aboveground parts and underground roots, concentrated in the sun and treated harmlessly or buried deeply; For contiguous flat plots, the residual roots can be removed by mechanical tillage, and suitable crops or greening plants can be planted in time to prevent reoccupation; Non-cultivated land can be sprayed with sterile chemical herbicides.
If you find similar weeds, you can call Wuhan Agriculture and Rural Bureau at (027)65683248 and 65683287 to report them.
8 besieged cities in Wuhan. How did this Huanghua 3 get into China?
Let's get to know this "devil's flower" and look at its past lives. As the name implies, we can see that it is an exotic plant. Yes, its hometown is Canada in North America, and it is also found in the United States and Mexico. Because of its beautiful flowers, people loved it and began to use it as a garden ornamental plant. Since then, it has spread to Europe, Asia and Australia. China was introduced from Japan as an ornamental flower in 1935, and was cultivated as a garden flower in Shanghai, southern Jiangsu and Lushan in the early days.
However, this devil flower, unwilling to be lonely, did not stay in the yard for people to watch, but fled to the wild and grew on the edge of farmland, roads and wasteland. 1996 or so, found in the coastal areas of Zhejiang in eastern China. It didn't attract much attention at first. It feels that it can't stand the wind and rain in the wild. Unexpectedly, it gained a firm foothold after this unexpected escape experience, gradually adapted to the local environment and started a new expansion plan.
In 2000, it began to spread rapidly in the wild in Jiangsu, Zhejiang and Shanghai. But in the open space and wasteland, it has become its home, growing wildly in a large area, forming a single dominant population, driving indigenous plants out of their ancestral homes. It can be said that it is shameless to try every means to illegally occupy living space, which is simply 100 years ago. It is reported that in the past 20 years, more than 30 native plants have become extinct, accounting for one tenth of the native species in Shanghai, which seriously affected the growth of local primitive vegetation and destroyed biodiversity.
While squeezing the living space of indigenous plants, they also extended their claws to crops and cash crops, and began to invade orchards, corn fields, cotton fields, tea gardens, vegetable fields and agricultural pastures, which often led to the reduction or even no harvest of these crops. What's more, Solidago canadensis began to invade some landscape green belts. Due to extensive management, shrubs often die, the landscape is single, and the aesthetic value of the landscape is greatly reduced.