A news that experts "defended" a yellow flower in Canada was on the hot search. It turned out that a Canadian yellow flower had invaded Zhengzhou and Zhoukou in Henan Province, which had aroused widespread discussion on the Internet! However, according to experts, although a Canadian yellow flower has a variety of unbearable, it can not be "killed with a stick", on the grounds that a Canadian yellow flower can be planted on river beaches, hillsides, saline land, deserts, or improve the soil, or green barren mountains to reduce soil erosion.
At first glance, the experts' reasons are "sufficient" and seem to have "reason", but they cannot be carefully scrutinized. It should be known that a Canadian yellow flower is known as the overlord flower, the devil flower and the ecological killer, and more than 15 countries around the world prohibit the introduction of a Canadian yellow flower, and strictly guard against it.
Since the "invasion" of Shanghai by a Canadian yellow flower, at least 30 kinds of weeds and flowers have "disappeared", and in 2010, China included it in the "List of Invasive Alien Species", and in the list there are also well-known water hyacinth, purple stem Zelan, aircraft grass and so on. That is to say, the "harm" of a Canadian yellow flower so far is far greater than its "potential use"!
Trying to limit a yellow flower in Canada to a certain range without escaping is probably a whimsical thing! In 1935, a Canadian yellow flower was introduced as an ornamental plant to Shanghai, Lushan and southern Jiangsu, and was initially only planted in some small parks and private gardens.
However, in the early 1980s, a yellow flower in Canada had spread throughout Zhejiang and Shanghai, and it appeared in more than a dozen provinces such as Hunan, Hubei, Guangxi, Jiangxi and Guangdong around 2000. A Canadian yellow flower not only successfully escaped from the garden to the outdoors, but also "bloomed everywhere" throughout the country through strong reproductive ability.
There are two ways to reproduce a yellow flower in Canada, one is sexual reproduction and the other is asexual reproduction. Every year in March, the seeds of a Canadian yellow flower begin to germinate; in July, the height of the plant can exceed 1 meter, or even 2 meters; in late October, the plant enters the flowering and pollination period; and the fruit matures from the end of November to the middle of December.
The seeds of a Canadian yellow flower with crown hairs are small in size and light in weight, and a thousand seeds are about 0.050g, which are gently blown by the wind and "leap" into the distance! Moving a few miles at a time is undoubtedly a "piece of cake" for them. What is even more frightening is that the seeds of a yellow flower in Canada can also complete ultra-long-distance migration by adhering to birds, walking animals, or being swallowed by birds, ranging from more than ten kilometers to hundreds of kilometers long.
At the same time, a single Canadian yellow flower produces as many as 20,000 seeds, of which 50%-80% can germinate and grow. According to tracking data from a research institute in Zhejiang, only 6 Canadian yellow-flowered plants are needed, and after 8 years, they will swell to a super-large community of 1400 trees, which also includes the parts that have been relocated to other places and artificially destroyed.
If a Branch of Yellow Flowers in Canada "camps" near the farmland, the quality of crops such as soybeans and corn planted has also dropped significantly: the fruit is ugly, the taste is not good, and there is a faint "peculiar smell"!
In other words, the method by which experts use a yellow flower in Canada to green a barren mountain is flawed, because it is impossible to stop its spread!
Let's talk about avoiding soil erosion. It does not deny that a yellow flower in Canada has the effect of slowing soil erosion, but it can only be said that "not enough". Unlike most plants, whose roots are riveted deep into the soil, the roots of a Canadian yellow flower are shallow, and 4-15 rhizomes frantically "expand laterally" around the plant.
At intervals from the root system that grows around, its top buds break through the soil to breed a new plant. According to statistics, the root growth radius of plants is about 5-10 meters, and through this asexual reproduction method, a plant can "clone" more than 50 plants in two years.
In the process, the entire root system constantly robs other green plants of water and nutrients, and at the same time releases a chemical substance that can inhibit the growth of sugar maple seedlings. The result is that as long as the area is invaded by a Canadian yellow flower, after a few years, other flowers, weeds, etc. have collapsed and disappeared!
Some experts argue that a Canadian yellow flower can be used to make honey, is it really possible? Because a yellow flower in Canada blooms in autumn, while the flowers of other green plants have withered, it has become a rare "food" for some bees. Beekeepers abroad package the nectar of a Canadian yellow flower as a "superfood", claiming that it has beauty skin care, improves the human circulatory system, and even treats illness!
In 2008, a kilogram of honey from a Canadian yellow flower could sell for 5 pounds, rose to 12 pounds after 2018, and approached 20 pounds in 2021, while the price of other honeys only increased slightly! Under the hard publicity of merchants, 37 countries have allowed the sale of a branch of yellow flower honey in Canada, including New Zealand and South Africa, which are far away from Canada, and a yellow flower honey can also be sold!
However, in recent years, Canada's yellow flower has attracted the attention of various countries and began to assess the degree of harm to the local ecology, while some countries have directly restricted the import of a yellow flower honey in Canada, worrying that their domestic distributors will desperately introduce seeds out of interests.
So how to deal with Canada's yellow flower? The main method currently used is to first pull out, then burn, and finally treat with a chemical. This aspect is labor-intensive, labor-intensive, and time-consuming, and a 3,000-acre Canadian yellow flower in Wuhan requires 25 professionals and 4 large vehicles to work continuously for several weeks. During the period, it is necessary to exhaust one more Canadian yellow flower seed and stem, otherwise it will make a comeback the next year!
So adopting the introduction of competitors is a good approach! For example, reeds, which have similar habits to a Canadian yellow flower, but reeds are more competitive, so reeds can be introduced in rivers and wetlands. Silver-streaked nocturnal moths can be introduced in other areas, using its parameters to remove a branch of Canadian yellow flowers.
Original: Old High