Please note that the "fruit" in the picture is not the well-known ginger slices, its name is calledFallen sunflower potato, which is its fruit.
This plantIt is not a native Chinese cropOur countryIt was introduced in the 70s,Due to the excellent breeding environment, the sunflower potato grows well in China and has since escaped into the wildIt was flooded for a while,"Occupied" people's fields and roads, and was hated by people.
Now the sunflower potato has changed, butBecome a "cash cow" for peopleWhat is going on? Let's take a look.
In 1976, Taiwan, China was the first to introduce sunflower potatoes from Brazil, and then gradually cultivated by mainland provinces.
After entering the Chinese mainland, the growth and reproduction speed of the sunflower potato is particularly fast, once it lands in the wild, it can be found in just a few months, and in a few years, basically as long as it is suitable for their growth, more or less exists.
If it's just to put down roots in China, that's fine, butIts vine growth is very domineering, likes to climb on some relatively tall plants or human houses.
Due to its fast growth rate, under the right conditions, it can grow about 1 meter a week, and it can grow to 6 meters in a season without a problem.
If it climbs onto native vegetation, it will also compete for sunlight and nutrients, causing the attached vegetation to die.
The most important thing is that after the above-ground parts of the sunflower potato die, there will be moreAqueous solutions that affect the growth of other plants, the main theme is a "what I can't get, you don't want to get".
At that time, many people were engaged in agricultural production with a low degree of mechanization, and the yield dropped sharply, how could people like it?
And one more thing,Fallen sunflower potatoes are difficult to be **,Its underground rhizomes are well developed, and once there is any remaining part, it will re-establish vines in the spring of the following year.
A vine can produce many flowers, which have spread in many waysIt is also a thriving family of sunflower potatoes
How did such a nuisance species become a "cash cow" for some people? It's actually very simple, and later people found outIt turns out that sunflower potatoes can be eaten, so it became a delicacy on people's tables, and the quantity was controlled.
Nowadays, people have derived a variety of ways to eat sunflower potatoes, such as its sprouts can be used for stir-frying, cold dressing, soup and so on.
Its pearl buds can be stewed in chicken soup to nourish the body, and the rhizomes are dug in the spring and winter seasons, which can be fried and eaten, stewed chicken, etc., which is a very classic health food.
The nutritional value of sunflower potatoes is not low, and it contains a variety of elements needed by the human bodyIn particular, the content of carotene is higher
In terms of medical value, it is recorded in "Taiyuan Flora Volume I":
"Slightly bitter and warm. Nourish, strengthen the waist and knees. External use to reduce swelling and disperse stasis".In addition, some people also like to transplant it into their own gardenAs a landscape plant,If properly handled, it can become a beautiful vegetation landscape.
After the role of these aspects is excavated, the public's demand for sunflower potatoes will naturally rise, and where there is demand, there will be a market.
When the potatoes in the wild are almost consumed, some people will defecateWant to grow these plants yourself
With proper management, the yield can be up to 75,000 kg per hectare, plus its disease resistance, adaptability and other advantagesIn the early days, the sunflower potato industry was basically a sure win.
Soon, about the sunflower potatoA complete industrial chain has been formedIn addition to traditional household consumption, there are other derivative products, vegetation that people once denouncedIt has become a cash cow for some people.
That's itIt's the same as the original crayfishWhen I first arrived in China, I always liked to make holes in the fields and destroy the canals, which affected the growth of food crops.
At that time, people were eager to dig three feet into the ground to dig out the crayfish.
LaterCrayfish is loved by more and more consumersIt has become a delicacy on the table one after another, and now the ** of high-quality wild crayfish can be sold for dozens of yuan a catty, and it is often priceless.
The rise of crayfish has also brought a group of farmers rich, whether it is sunflower potatoes or crayfish, which really confirms that sentenceThe Chinese solve the invasive species, all by eating.
If scavengers could eat it, it might be an "endangered species" in China by now.
Of course, this is just a joke, but there is no denying the important role of our consumption in suppressing invasive species.
Another example of invasive species, it isAmerican Bullfrog,As an invasive species, its harm research is mainly concentrated in Europe and the United States.
It may be hard to imagine how strictly this bullfrog is regulated in Europe.
According to the European Union's list of invasive species, American bullfrogs cannot be imported, reproduced, transported, commercialized, etc., and even if you intend to release American bullfrogs, there are themYou could face jail time
At the same time, theyAmerican bullfrogs are cleaned up in various bodies of water every once in a whileIt can be said that it took a lot of effort.
The reason why Europe is in such a predicament is that, on the one hand, European and American countries do not have much consumer demand for bullfrogs.
On the other hand, the American bullfrog is also very domineering in the wild environment, competing with other amphibians for food and living space, and some small frogs, such as the Huaxi tree frog and the Ze frog, will become the food of the American bullfrog.
In addition, wild American bullfrogs generally carry parasitesEuropeans have avoided it
But it ...... as soon as it arrives in China
Of course, the American bullfrog in China is not necessarily all in the "Five Organs Temple", let's return itHis research focuses on the efficient breeding technology of American bullfrogs, as well as its disease prevention, prevention and control problems, as for the American bullfrog in the wild, the number is actually not much.
References:
1] Ding Bingyang, Hu Renyong, editors-in-chief. Invasive alien plants in Wenzhou and their research[M], Zhejiang Science and Technology Press, 201109, p. 81.
2] Wang Yulin. Biological characteristics and control of alien plant Sweet potato Anhui Agricultural Sciences, 2008
3] Ji Guangxin, Tan Lingling, Chu Qinggang. Anatomical study on the distribution and development of mucus cells in sweet potato CNKI, 2010
4] China** Network "Notice on Releasing the List of the First Batch of Invasive Alien Species in China".