Wuhan 8 department besieged this yellow flower in the whole city.

Wuhan 8 department besieged this yellow flower in the whole city.

Eight cities in Wuhan besieged this yellow flower. It is a beautiful flower with bright colors, but it is actually a "devil's flower" that destroys local 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 before 10/65438+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! It's just a 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 it is brightly colored, it is actually a malignant weed. As an exotic species, it has the nickname of "the devil's flower" and has strong reproductive ability.

Each independent plant can produce more than 20,000 seeds every year, which can spread and spread with the wind, occupy the niche of local species through strong competitiveness, make local species lose their living space, release allelochemicals to inhibit the growth of other plants, form a large-scale single dominant community, and reduce species diversity. It will not only destroy the naturalness and integrity of the landscape, but also invade 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 known as "overlord grass" and "poisonous grass", which is the so-called "yellow flowers bloom and kill all flowers"!

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 aimed at controlling 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 seems to be not as good as expected. Every autumn, patches of Solidago canadensis are still visible.

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, an invasive plant, but both of them belong to Solidago canadensis complex.

Experts remind that although the probability of invasion harm caused by fresh cut flowers is small, the risk brought by large-scale planting of fresh cut flowers due to market demand exists. Therefore, the large-scale sale of "Huang Yinghua" should be taken seriously, at least not discarded at will.

The eighth part of Wuhan besieged this yellow flower, which is a beautiful flower with bright colors, but it is actually a "devil's flower" that destroys 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 Gardens and Forestry Bureau, Transportation Bureau, Ecological Environment Bureau and Wuhan Customs, to deploy and manage this species called "Solidago canadensis", and at the same time appealed to the public to report and deal with this flower.

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, but 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 in my flowers", and it is called "ecological killer".

The "Solidago canadensis" displayed in the conference is a bunch of yellow flowers like ears of rice, like pale yellow grains of rice, which are currently in the flowering season. It has widely appeared in urban and rural greening areas, farmland, abandoned land, 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 land, farmhouses, woodlands, wetlands, nature reserves, rivers, lakes, reservoir areas and coastlines, urban and rural greening 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 tasks before 165438+ 10, so as to effectively control the spread and harmful effects.

According to the requirements, all districts and relevant departments in Wuhan will seize the key opportunity to control the seeds before they are ripe, quickly arrange personnel to conduct a comprehensive investigation on the local distribution of the species, and organize forces to carry out clearance operations to ensure that there are no dead ends and no 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, and concentrated in sun drying and harmless treatment or deep burial; In the contiguous flat plots, the residual roots and stems 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.

Wuhan 8 besieged the whole city. How did this Huanghua 3 get into China?

Let's learn about this "Devil's Flower" and see 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 distributed in the United States and Mexico. Because of its beautiful flowers, people loved it very much and began to use it as an ornamental plant in the garden. 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 is unwilling to be lonely. Instead of staying in the courtyard for people to watch, it escapes to the wild and grows on the edge of farmland, roads and wasteland. Around 1996, it was found in the coastal area of Zhejiang in the east of China. At first, it didn't attract much attention. 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 began a new expansion plan.

By 2000, it began to spread rapidly in the wild in Jiangsu, Zhejiang and Shanghai. However, in the open space and wasteland, it became its home, growing wildly in a large area and forming a single dominant population, which drove the indigenous plants out of their ancestral homes. It can be said that it tried every means to illegally occupy the living space, which was simply shameless 100 years ago. According to reports, over the past 20 years, more than 30 species of local plants have become extinct, accounting for one tenth of the local species in Shanghai, which has seriously affected the growth of local primitive vegetation and destroyed biodiversity.

While squeezing the living space of indigenous plants, it also extended its 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, and the landscape is single, which greatly reduces the aesthetic value of the landscape.