“Devil flowers” invade Our country, can breed 20, 000 plants, can be called the plant world scavenger

2022-05-01 0 By

It is an invasive alien species, it is also known as the demon King flower, it is called the plant world scavengers…It is the Canadian solidago that is wanton inundation in our country, and now has reached the point of “the whole network wanted”, and even the official appeal: see this kind of yellow please report immediately!So, let’s take a look at this ecological killer of the plant world.On Nov 28, 2021, some police and members of the public spontaneously came from other places to see off fu Xiaohua, who was killed on duty in Dangyang city, Hubei Province.So what happened?It all started two days ago.Fu Xiaohua, a third-class police chief from Dangyang Police Station in Hubei province, was on a routine safety inspection of changban Reservoir when he noticed a strange yellow flower growing on the side of the reservoir.From the appearance, this kind of flower long yellow, flower shape and common see chrysanthemum is very similar, and chrysanthemum is different, the number of flowers is very large, and the inflorescence is panical distribution.Fu Xiaohua saw that the flower looked very similar to solidago canadensis, so he quickly picked up his mobile phone to contact his comrades: “Xu Ge, there seems to be solidago canadensis on the side of the reservoir.”Fu xiaohua took photos of the plant with his mobile phone in order to determine whether it was solidago canadensis, but he fell into the water and died because he was not paying attention.At the same time, police around the police have also received people’s alarm calls, said that somewhere found this yellow flower.For a time, the police have been dispatched to cover the yellow flowers, once found will immediately destroy.So, why Canadian solidago can make people around the police so much, Canada solidago and what harm?But don’t worry, it all starts with the Canadian goldenrod invasion.The reason why Canada goldenrod invasions last century in the 1930s, a small flower as ornamental flowers introduced to Shanghai, and was planted in a garden in Shanghai.In the sunshine, yellow flowers covered with branches, a string of very beautiful, suddenly attracted the attention of many passers-by.Canadian goldenrod many people who watched him, are full of praise for it, but also gave it a lot of elegant names, such as yellow warbler, happy grass, unicorn grass……Because of its high appearance level, it is a rare species in the local area, and this flower is imported from the West. Compared with other varieties of flowers, it is simply a little red in the green clusters, and instantly it is sought after as a flower aristocrat.In the following decades, the yellow flower has been in a state of pampered life, not only with special care, but also by many passers-by appreciate and praise.Here, we’ll call it goldenrod.If monkeucheuma had been so happy in the garden, it might not have mattered so much.But even people can get bored after a long happy and ordinary life, and the same is true for the unicorn.Not that life is not just a casual life, but also poetry and distance. Kirin herb is not willing to stay in the garden all the time, and it begins to yearn for a wider world. The world is so big that it wants to see.So the monockula came out of the garden, and like the dandelion, its seeds were scattered by the wind, and the seeds were carried away by the wind to farther and farther places.After decades of diffusion, Kirin grass gradually spread all over the south of China, factory, hillside, river, asphalt road, urban and rural wasteland, rural roads……You can see it everywhere.By the 1980s, eucheuma had gradually spread to China’s Yangtze River basin.Now it has even spread to the Yellow River, where it has been found in Many places, such as Henan province.And what we call goldenrod is actually solidago canadensis.Canadian solidago canadensis is also called yellow warbler, kirin grass, is a compositae plant of Platycodon order, mainly originated in North America, and was later introduced to China.Canadian solidago canadensis is a perennial herb with long rhizomes, erect stems and plants up to 2.5 meters in height.The head inflorescence is small, the flower shape is beautiful, the color is gorgeous and is yellow mostly.But when it comes to Canadian goldenrod, many people will confuse it with goldenrod, and here is about to give you a popular science about the difference between the two.Goldenrod first of all, Canadian goldenrod belongs to alien invasive species, usually, once the word “alien invasion” is mentioned, it basically indicates that this species will cause harm to the ecological environment.Solidago officinalis is a native species in China. It is not only distributed in all parts of China, but also has certain medicinal value.Second is the appearance of the different form, Canadian solidago solidago plant is higher than solidago solidago, the root is more developed than native solidago solidago.In addition, as seen from the abiotic inflorescences, the heads of Solidago canadensis are paniculate and cincinni on one side of the branches, whereas the heads of solidago canadensis are racemose or paniculate and are not cincinni on one side of the branches.Finally, from the fruit, the fruit of Canadian goldenrod will have a nap, and the fruit of goldenrod is relatively smooth.Although the Canadian solidago has a beautiful skin, it lacks an interesting soul. When it comes to ecological damage, it is as bad as the invading scavenger.The damage of Canadian solidago canadensis, the reproductive capacity of Canadian solidago canadensis is very strong.A single solidago canadensis plant can produce more than 20,000 seeds, and these seeds have a high survival rate.These seeds, very similar to dandelions, are blown about by the wind, and when exposed to suitable living conditions, they take root, grow and reproduce in the area.In addition to seed dispersal, the solidago canadensis can reproduce asexually. Its roots spread through the soil. By the next year, the solidago canadensis will have many young plants around it.At this exponential rate of growth, it won’t be long before a large area of land is occupied by the yellow flower.Second, Canadian solidago has strong vitality and adaptability.Canadian solidago life is very long, as perennial herb, other weed plants will gradually wither or stop growing in the autumn, but Canadian solidago is still maintaining exuberant vitality, not only grow flowers, and still see the needle, around seize the living space of other plants.In addition to having strong vitality, it has a strong ability to adapt, not only cold and drought resistance, but also for a variety of environments, can grow.Allelopathy of Solidago canadensis.As we all know, scavengers are notorious in fish. They not only look ugly, but also cause great harm to other fish. Therefore, scavengers have the nickname — the fish without children.The reason for this is that scavengers only eat the young and eggs of other fish. As a result, the species and number of fish in the water decreased greatly, and the number of fish mouths showed a negative growth, which made many fish hate it so much that they gnashed their teeth, hence the name.Similar to the scavenger, the Canadian goldenrod also has a nickname – the Demon King flower.As we mentioned earlier, solidago canadensis can rob other plants of their living space, causing them to die for lack of nutrients or soil.In addition, it has a powerful weapon: its roots secrete a chemical in the soil that inhibits the growth of other nearby plants.As a result, other plants are no match for it, and the aristocrat of the flower becomes a demon bully or ecological killer.According to statistics, 30 native species have been wiped out in Shanghai alone since the Canadian solidago came into the city.In the areas invaded by Eucheuma, biodiversity has been greatly damaged, and many crops have been greatly reduced.In addition to causing harm to plants, there are also great effects on animals.Because the decrease of plant diversity will indirectly lead to bee malnutrition, excessive consumption of solidago canadensis nectar, will also reduce the survival rate of bees.Today, Solidago canadensis has become one of the most widely distributed invasive plants with the greatest ecological harm in China, and is also listed as a malignant invasive plant by China’s environmental department.At this point, one might wonder, doesn’t it have any natural enemies?Is the Canadian solidago so lawless?But don’t worry, the Canadian goldenrod is powerful, but it also has natural enemies.The natural enemy of Solidago canadensis some scientific studies have found that dodder can parasitism in solidago canadensis canadensis, and the reproduction of the plant has a certain inhibitory effect.Dodder seed dodder also called bean parasitic, yellow silk, golden silk vine, is an annual parasitic herb, in China, Japan, Korea, Australia and other places are distributed.Dodder like parasitic on other plants, and in the plant contact part of the formation of roots, and then absorb nutrients and water from other plants, especially legumes, asteraceae, often can see dodder figure.Dodder therefore, dodder is also a major pest weed in some crop areas.Although dodder is harmful, if the parasitic effect of dodder can be reasonably used, it can inhibit the reproduction of Solidago canadensis to a certain extent.The larvae also inhibited the growth of solidago canadensis by eating its leaves and depriving the plant of photosynthesis, the study found.Another characteristic of the larva is that it does not do much harm to other plants. It only feeds on five species of compositae plants, which are Saliciferum annuum, Saliciferum saliciferum, Phyllostachys corydalis, Goldenrod canadensis, and this kind of insect is also distributed in China.For now, however, it seems that the limited number of the insect is not enough to solve the root of the problem in the face of the large and fertile Solidago canadensis.In this case, there is little natural artificial prevention and control.Canadian solidago prevention and control is the first physical prevention, in simple terms, is to cut flowers, root, burning.Goldenrod canadas bud in March, bloom in October, and produce mature seeds around December.As we said earlier, this plant can reproduce not only sexually but asexually, so in order to get rid of the roots, whether it’s a flower or a flower or a seed, you have to destroy it.This is environmentally friendly, but requires a lot of human resources.The second is chemical control, where herbicides are used to effectively kill growing plants.Although this method is economical and convenient, it also causes pollution to the environment.Finally, it is to transform waste into treasure and develop the use value of Canadian goldenrod.Such as refining the essential oil in flowers, used in cosmetics or shower gel research and development, or extract the active ingredients, used in pigment production, but this is still to be further scientific research and exploration.Finally, in order to protect the environment we live on, when you found Canadian solidago, as far as possible to the local department report, but also to protect the nature out of a force.Of course, if you have any suggestions on how to control Canadian goldenrod, please leave them in the comments section.