laitimes

Canadian Goldenrod: Notorious for "unreasonable", turning harm into treasure, and great expectations

author:For Qing thrush said three farmers

In the long-term natural evolution process, a relatively stable ecological balance will be formed in a certain area, once a dominant species step in, the original ecological balance will be broken, the establishment of a new ecological balance, often take a long time, and pay a huge price, this price may be to make some species decline or even extinction, for crops that require strong human intervention to obtain a bumper harvest, this process is an ecological disaster that threatens the security of food supply.

Canadian Goldenrod: Notorious for "unreasonable", turning harm into treasure, and great expectations

A good seed can benefit the world, but a malignant weed can also make people talk about it. The most notorious malignant weed in recent years is none other than the Canadian goldenrod. However, although the Canadian goldenrod has repeatedly been on the hot search, this perennial herb native to North America is not a new visitor to the land of China, as early as the mid-30s of the last century, it has taken root and sprouted on the mainland, counting up, more than 80 years ago. Similar to the introduction of rabbits to Australia, no one expected it to be so powerful and cause so much trouble. Today, the elegant object that was originally used for viewing has transformed into an ecological demon.

But anything that can cause great movement has extraordinary abilities. The Canadian goldenrod can be called the "unbeatable little strong" in the plant world, and its outstanding ability is super adaptability and reproductive ability. Compared with our artificially cultivated field crops and horticultural crops, its survival ability in nature can be called "unreasonable", which is the root cause of its domineering in nature, making people want to get rid of it quickly, but racking their brains for cutting grass and roots.

Canadian Goldenrod: Notorious for "unreasonable", turning harm into treasure, and great expectations

Regardless of the environment, if you have food to eat, you can burst into combat effectiveness

Like other plants, in places with suitable temperature, good light and excellent soil texture, the growth and reproduction of Canadian goldenrod will be like a fish in water, but in weak light, high temperature or cold environment, it can also grow well, and in the saline-alkali environment where most plants are not suitable for survival, it will increase the absorption capacity by strengthening the root system to obtain good growth.

This characteristic determines that in the suitable soil and climate environment for long-term cultivation of human beings, it will quickly multiply and grow into a dominant species once it takes root, if there is no effective human intervention, other plants in the same growth environment will be in the downside in the survival competition, under this explosive survival competitiveness, the crops planted by humans are even more difficult to resist.

It is also more troublesome that the low requirements for the growth environment determine that it can see the rapid growth and mass reproduction of sewing needles in remote barren or barren places that are not often involved in human production and life, which greatly increases the difficulty of eradication.

Canadian Goldenrod: Notorious for "unreasonable", turning harm into treasure, and great expectations

The "unreasonable" ability to reproduce is unpreventable

All species that cause ecological disasters have one thing in common, that is, they have strong reproductive ability. The Canadian goldenrod has brought this advantage to the fullest. There are two main ways of its reproduction, one is underground stem propagation, and the other is seed propagation, the two ways cooperate with each other, the ground and air three-dimensional joint force, people can not be prevented.

A Canadian goldenrod can produce more than 20,000 seeds, and can take root and germinate into a complete plant seed proportion of up to 80%, its seed particles are small, close range can be spread by wind, agricultural labor, long distance can be spread through the wheel stained with soil, grain harvesting and transportation, etc., small seeds have a strong concealment, often people and vehicles have done "good deeds" to take it to distant places but do not know.

Canadian Goldenrod: Notorious for "unreasonable", turning harm into treasure, and great expectations

Once the seeds are settled and rooted, and then eradicated, it will be more difficult and difficult. It also seems to have anticipated its ill-fated fate and evolved its defense, which is to rapidly grow its root system. Canada's underground rhizomes have a strong lateral growth capacity, and these rhizomes will sprout directly into the ground to grow into a complete plant. Its root system will strongly absorb nutrients in the soil, crowding out the living space of other plant roots, coupled with the tall aboveground part of the plant, it will oppress the surrounding plants due to the competition for light, this powerful combination fist helps it become the dominant plant.

Canadian Goldenrod: Notorious for "unreasonable", turning harm into treasure, and great expectations

For most plants, the effect of cutting grass and removing roots can be achieved by pulling out, and this method is also effective against the Canadian goldenrod. However, if you think that this method can solve it, then you can underestimate the ability of the Canadian goldenrod, not only can not eradicate it, but may also "help the abuse" and become an "accomplice" to help it multiply. Because in the process of extraction, any broken root or stem left in the soil will turn into a vibrant seed, take root and germinate and grow into a complete plant, that is, after a fierce operation, the original plant becomes many plants.

This ability of the Canadian goldenrod is called stress reproduction, and the bowl flower also has this ability, but in front of it, it can only be the existence of a little brother. This ability determines that in order to achieve "pulling out" of Canadian goldenrod, it is necessary to find it as early as possible, remove it as soon as possible, and clean it up, and then take it out of the field intensively, and be careful not to fall along the way, and then do a concentrated and thorough harmless treatment.

Canadian Goldenrod: Notorious for "unreasonable", turning harm into treasure, and great expectations

Will actively attack neighboring plants

In the growing soil, the Canadian goldenrod can not only dominate the root system and plant volume, but also exhaust the means to absorb nutrients in the soil. For example, its roots are accompanied by symbiotic bacteria, which can not only help it germinate the root system and expand the sphere of influence of nutrient absorption, but also help it improve the absorption capacity of mineral nutrients such as phosphorus in the surrounding soil, thereby limiting the absorption and utilization of the element by neighboring plants to achieve the ability to inhibit the survival of neighboring plants.

In addition to jamming the neck of neighboring plants in nutrient supply, what is more powerful is that it will launch an active attack on neighboring plants, and the measures taken are to secrete limonene, eucalyptus, camphor and other chemicals that can inhibit the growth of other crops. This is a good idea for it, because it can protect itself well from pests and germs while coercing neighboring plants to survive.

Canadian Goldenrod: Notorious for "unreasonable", turning harm into treasure, and great expectations

Why the origin is not flooded

The Canadian goldenrod has caused ecological disasters on the mainland, but in its place of origin it can honestly live in harmony with the surrounding plants in the entire ecosystem, as if it is not so heavy and destructive, the reason is that in the long-term evolutionary process has produced a group of "goldenrod gallmakers", these small nemesis, will parasitize in a goldenrod and draw nutrients from its body to provide its own survival, which is equivalent to a beast firmly locked in a cage. However, it is a pity that as an imported species, the continent still lacks a cage to tame it.

Canadian Goldenrod: Notorious for "unreasonable", turning harm into treasure, and great expectations

Turning harm into treasure can be expected in the future

There is no more effective way to deal with invasive species than to discover its economic value and, if possible, to turn it into a delicacy, as is the case with crayfish. At present, the exploration in this area has achieved initial results, in Zhejiang there have been people in the purchase of Canadian goldenrod, for raising beach sheep, even if it can not be directly supplied to the human table, first become sheep cuisine, and then in the form of lamb kebabs, roast lamb shank between the lips and teeth, the process is indirectly circuitous, but promising. #加拿大一枝黄花会是下一个小龙虾吗 #

The original is not easy, if you feel that this article can bring you gains, please like, comment, forward, thank you very much.

Read on