is making a comeback? Canadian yellow flower has once again appeared on a large scale. It is understood that large-scale invasion of Canadian yellow flower has been reported in Hunan, Zhejiang, Shanghai, Nanjing and other places in my country, which once again attracted the attention of the people of the whole country.
htmlOn October 16, a netizen in Sichuan revealed that a plant similar to a yellow flower in Canada was found on the Chengdu Ring Expressway. On October 29, the Agriculture, Rural and Forestry Bureau of Pidu District, Chengdu came to the location of a yellow flower in Canada, confirming that the species is the invasive species "A yellow flower in Canada".
In recent years, regarding the elimination of a yellow flower in Canada, my country can be said to have used all available methods, such as spraying pesticides, root removal by excavators, etc., the eradication work has been continuing.
It is understood that on October 21, Changsha, Hunan just completed the removal of a yellow flower in Canada, and another 20 acres of a yellow flower in Canada were found to be distributed. Many netizens said: Why are the more you shovel, is this a comeback?
How poisonous is a Canadian yellow flower?
"Canadian Yellow Flower" is a plant of the Asteraceae family of Platycodon, also known as Yellow Oriole and Kirin Grass . In 1935, it was introduced to China as an ornamental plant . It is a very "domineering" invasive species and is known as the "Devil's Flower".
The growth environment of a yellow flower in Canada is very wide, such as river beaches, wastelands, roads, and farmland. The countryside lives around and can grow in almost most parts of our country.
This invasive alien plant has a long growth period and has no natural enemies in China. Its root secretions can inhibit the growth of other plants in the invading place, compete for sunlight and nutrients with surrounding plants, destroy the ecology, and erode fertility until the surrounding plants die.
Moreover, a yellow flower in Canada has a very strong reproductive ability, and its reproduction can be carried out in two ways, namely planting and root reproduction.
It is understood that the number of seeds in a single plant of a yellow flower in Canada reaches 20,000, and its seeds can spread with the wind or birds. The root transmission is mainly due to the very developed root system of the species. As long as there is a place where the species survives, its root system covers a very wide range. It creates superior conditions for its dissemination.
Why did a Canadian yellow flower invasion occur in various places in October every year? The main reason is that the flowering period of this species is from October to November each year, so this period is the best time to distinguish a yellow flower in Canada, and the best time to eradicate the seeds are not yet mature.
It is reported that the rainfall in winter decreases, and the moisture content in the soil of this species decreases. The emergence of a yellow flower in Canada will lead to a decrease in fertility in the soil, and problems such as soil slabs and acid-base imbalance, and may even turn into saline-alkali land.
How difficult is it to eradicate a yellow flower in Canada?
For the eradication of most plants, it is mainly manually removed and dried. However, the eradication of a yellow flower in Canada is very troublesome, and it is necessary to organize excavators, manpower removal, chemical pesticides and other means to strive to eliminate the roots.
If it is simply removed, the possibility of eradication is very low. Because its root system is very large, it is easy to be left in the soil to pull out, and growth may still occur the following year.
According to experts, the best way to control the spread of a yellow flower in Canada is to control the spread of seeds and remove them before the seeds mature. The seeds are destroyed by burning fire, spraying pesticides, etc., and then all the rhizomes of the plant are removed and transported to a unified place for destruction.
In order to avoid the secondary reproduction of a yellow flower population in Canada, it is necessary to use an excavator to further clean the roots under the ground in this area, and clean out the huge roots and dry them and destroy them uniformly.
At present, Canadian Yizhihuanghua has been included in the "2020 China Ecological Environment Status Bulletin". More than 660 invasive alien species have been discovered nationwide, of which 71 have posed or posed potential threats to natural ecosystems and have been included in the " List of Chinese Invasive alien Species ", and "Canadian Yizhihuanghua" is one of them.
Canadian yellow flower, as an "invasive species", will pose a serious threat to my country's biodiversity and the agricultural economy. Therefore, my country attaches great importance to the growth characteristics and population data of related alien species. According to experts, if you find a yellow flower in Canada, please report it immediately.
summary
Canadian yellow flower has invaded in many places in my country. "Canada yellow flower" has strong reproductive power and spreads quickly. It competes for sunshine and fertilizer with surrounding plants until other plants die, posing a serious threat to local provinces and regions and destroys my country's ecological balance.
Finally, I call on everyone to report to the forestry department immediately if they find anything, so that professionals can clean up in time to avoid population expansion and threaten ecological security.
