Introduction: Native to Brazil, when the introduction of feed, has caused a serious reduction in rice yield, eat and pull out can still grow
Not long ago, a yellow flower in Canada was on fire.
Because wild Canadian yellow flowers are found in many areas of Shiyan, Hubei Province, this invasive species is known as an "ecological killer" because of its super reproductive ability and serious threat to local native plants.
As an invasive species, a Canadian yellow flower has long been on the blacklist. However, in recent years, it has been found in many places.
Soon after a yellow flower in Canada was sparked, some netizens also remembered another "ecological killer" of invasive species in the early years.
Compared with a yellow flower in Canada, it has been introduced as feed, and after flooding in many parts of the country, it has caused a serious reduction in rice production.
Even it has a strong vitality, even if it is eaten and pulled out, it can still grow and reproduce, and some farmers directly call it an "alien species".
It is the hollow lotus grass that has long been infamous, commonly known as "water peanut".
<h1 class="pgc-h-arrow-right" data-track="9" > the popular science of hollow lotus grass</h1>
Decades ago, there were three kinds of vicious weeds in the rice fields of the south, one is barnyard grass, one is water hyacinth, and the other is the hollow lotus grass mentioned today, which is also the most vicious pest grass that once caused farmers the most headache.
Hollow lotus grass in the folk mostly called it water peanuts, hollow amaranth, water lettuce, and even some places directly call it "annoying grass", which shows how unpopular this plant is.
However, the hollow lotus grass is not a weed that has existed in China since ancient times, it is a typical exotic species. The ancestral home of this pest is in South America and is native to countries such as Brazil.
Speaking of hollow lotus grass entering Our country, the original intention at that time was still good. Because this plant is easy to grow and has a high yield, many countries have introduced it as feed. In the 1930s, it was introduced to China as feed for horses and pigs.
But soon, the plant showed its true colors as an invasive species. Because it is an invasive species, it lacks natural enemies, but this plant has the characteristics of rapid growth and easy reproduction.
After mass reproduction, it will not only cause crop yield reduction and water eutrophication, but also spread parasitic diseases and block shipping, causing serious impacts and great economic losses to the local area.
It is precisely because of the notoriety of hollow lotus grass that in 2003 it was on the blacklist of the first invasive species in China.
<h1 class="pgc-h-arrow-right" data-track="41" > how harmful is hollow lotus grass? </h1>
The harm of hollow lotus grass is known only to farmers who have actually come into contact with it. It is now one of the top ten vicious invasive weeds in the world, which shows that this plant is not popular on a global scale.
One of the hazards of hollow lotus grass is that it has a strong vitality and is a stubborn weed that is very difficult to remove.
This plant does not pick the environment in which it grows, whether it is waterless, poor soil or polluted environment, it can grow, and ordinary herbicides are not lethal to it.
Although this plant prefers to grow in a watery environment, it is also drought tolerant and can survive for several months in a dry environment without water.
And this plant still has a strong vitality. Even if it is cut into 2 mm pieces of short fingers, it can still grow and reproduce. Only because this plant can also reproduce asexually through its own rhizomes.
"How strong is the vitality of the hollow lotus grass?" Even if they are eaten raw by animals and then excreted, they can still grow and reproduce in large quantities. Fan Dan, deputy director of the Hubei Agricultural Ecological Environment Protection Station, once explained.
The most frightening thing is that it is not only strong in vitality and reproduction, but also grows very fast. There is a hollow lotus grass in the ground, which can grow a large piece quickly like copy and paste. Moreover, its rhizomes are intricately intertwined underground and are very difficult to remove.
If a large area of hollow lotus grass grows, then other organisms lack room to grow, and crops will suffer a serious reduction in yield.
Data point out that in 2016, hollow planting will reduce rice yields by 45%, wheat by 36%, maize by 19%, and sweet potatoes by 63%.
People's Daily pointed out that China's rice production has decreased by 20% to 63% because of hollow lotus grass, while Hubei Province will lose 191 million yuan per year because of hollow lotus grass between 2007 and 2010.
Hollow lotus grass is not only a threat to the growth of native plants, but also the environment in which it grows is too humid to shine in, which has become a breeding ground for some mosquitoes and other pests.
Hollow lotus grass is not harmful?
Is that hollow lotus grass really useless? Some people may think, since it was introduced as feed, why not develop it well?
At that time, the Japanese introduced hollow lotus seeds to Shanghai, and indeed they were planted as fodder for horses. And later China also used it as pig feed to promote planting, but later found that it was not ideal, but also became an "ecological killer". Once the farmland is invaded, if it is not eradicated in time, it is easy to cause different degrees of crop yield reduction.
And although hollow lotus grass can be used as feed to pigs, horses, etc., it contains soap paste. At the same time, in the process of growth, this plant also has a strong ability to enrich heavy metals, and long-term consumption is not good for the human body. It is for these reasons that few people grow it as fodder.
So why can it still be medicated, or eaten as a wild vegetable? In some areas, there is indeed a custom of eating hollow lotus seed grass, not only abroad, but also in recent years in China, it has also been developed into a wild vegetable.
However, it should be noted that although the lotus seed grass is non-toxic, a small amount of consumption is no obstacle, and eating too much is not good for the body.
<h1 class="pgc-h-arrow-right" data-track="42" > concluding remarks</h1>
As a netizen said, hollow lotus grass is a very annoying plant, it can grow on land and water, and it is not afraid of cold, and it cannot freeze it in winter. The stems and leaves on the ground die, but they grow again in the spring.
The key is that its vitality is too strong, no matter how much the rotary cultivator twists it into pieces, it can grow as many plants as it can grow, and the pesticide cannot kill its roots. This is simply an "alien species", and the way of infinite reproduction is terrible.
Friends, what good solution do you have for hollow lotus grass? Welcome to leave a message.