The locust plague has dealt a major blow to mankind, why is this thing so difficult to eliminate?

In the entire history of mankind, locust plagues have dealt a major blow to mankind, and when this kind of disaster appeared, the locusts were so numerous that they covered the sky and the sun like dark clouds, sweeping all the surface plants everywhere they went, turning farmland into barren land.

Since March and April last year, a locust plague from eastern Africa began to spread outward, not only expanded to eastern and northern Africa, but also crossed the Red Sea and the Persian Gulf, flew to West Asia and South Asia, and then until today, the locust plague affected the place often re-outbreak locust plague, in January and February this year, it repeated the locust plague trend last year, but the scale and degree of disaster are greater, with the strong support of the disaster prevention departments of the relevant countries, the development trend of the locust plague has been curbed, but after entering the end of April and MayThe locust plague has broken out again in these countries.

<>According to the "Hindustan Times" on May 26**, the Indian agricultural department claimed that a large number of locusts entered several states in the central, western and northern parts of India, with about 100 million locusts per square kilometer in densely populated places, and when they flew up, they were overwhelming, and some witnesses claimed that a group of locusts was at least two or three kilometers long, and all kinds of plants were eaten up everywhere they went, and crops in the disaster-breaking areas of India had been damaged.

<> reported locust plagues in the Indian states of Punjab, Gujarat, Kastan, Haryana and Maharashtra, the local agricultural department has arranged for personnel to start spraying crops and vegetation with chemical drugs to eradicate and prevent locust damage.

Even the famous Indian city of Jaipur has been hit by locusts, the rooftops of the local residents are crawling with locusts, the city square has been covered with locusts, and the cars driving on the road have been caught in a cloud of locusts, the road ahead is not visible, and the crops and vegetables in the fields are also being destroyed. India's capital New Delhi is also in an emergency, with an Indian meteorologist saying: "If the wind speed and direction are favorable, locusts will move towards the capital Delhi area in the next few days."

New Delhi, on the other hand, has a vegetation cover of 22 per cent and provides ample food for locusts.

<> not only India, but also Pakistan and Iran in South Asia, the locust plague is also severe, and the locust plague in Uganda, Somalia, Ethiopia, Sudan, Kenya, Tanzania and other countries in eastern Africa is also raging, and the locust plague of the World Food and Agriculture Organization **Senior**Keith Cressman said: "The locust plague in places like Ethiopia and Somalia is the worst in 25 years, the worst in India in 26 years, and the worst in Kenya in 70 years.

Because locusts have a strong ability to reproduce offspring, a strong ability to adapt to the environment and can fly, they move in groups, it is useless to use pesticides, and they have a strong ability to resist pesticides, so it is difficult to eliminate.

Because locusts are numerous, and they multiply at an astonishing rate, this thing is so difficult to destroy.

Because each locust will lay a large number of eggs in the soil, every year in March and April when the temperature rises, these locust eggs will naturally break out of the shell, can not determine the area and location of the eggs, do not completely eliminate the eggs, locusts will cause losses to human beings every year.

The cause of the locust plague is the destruction of its natural enemies by humans. To protect the natural enemies of locusts.

Locusts in every place have characteristics that are not exactly the same.

First of all, let's talk about its habits, locusts mostly like to gather in humid places, so it likes places with strong humidity.

Breeds quickly and is well suited to her growth rate.

It is not difficult to find that he likes to eat green leaves, likes to eat crops, why, because when it is hungry and thirsty in a place, it will look for sweets to satisfy its hunger.

Crops are sweet, such as corn, raw ones are sweet, so it likes to eat them.

Modify idle agricultural machinery, install two side strip suction ports (screen mesh to expand the scope of the mouth, and set up a trumpet-shaped fan suction machine behind), use agricultural machinery power to drive the fan to produce suction, and set up a locust collection pocket at the back end of the exhaust pipe behind the strip suction port, and the collection pocket is set at the mouth of the smoke exhaust cylinder, and the locusts are killed by using the high-temperature waste smoke discharged. Modified agricultural machinery is lined up and promoted in the locust area, and the effect of locust extermination is higher than that of pesticides.

Locusts reproduce very quickly, because the number of eggs laid by locusts is very large, which makes them reproduce very quickly. <>

If there is dry weather during the locust season, the number of eggs laid by the locusts will become very high. It is understood that it can produce 4,000 to 5,000 egg masses per square meter, pay attention to egg masses rather than individual egg masses, each egg mass also contains 50 of 80 eggs. This number is undoubtedly very staggering, and the arid environment will provide better spawning conditions for locusts, because locusts are a species that likes drought, if the locusts eat plants with very high water content, then its fertility will decrease, so generally the years with locust plagues are dry years.

When locusts lay eggs, they will choose the address of infection in a relatively loose place, and then bury their bodies in the sandy soil halfway, gently shake and give birth, and swing regularly with the oviduct ovulation, generally a locust ovulation will go away directly after ovulation after 40 minutes, which shows that locust egg laying is a very common thing in the locust species, so the locust species will become one of the natural disasters of human beings. <>

Because locusts are highly reproductive, and they are especially able to eat. One square kilometer of locusts can eat about 35,000 people's food a day, which is one of the reasons why locusts have such a strong reproductive ability. This vicious circle is undoubtedly a devastating disaster for humanity.

If the locust plague is accompanied by a locust mating period, then it is not so easy for even human experts to deal with it. <>

It can be seen from last year's locust plague in Africa that the locust plague has traveled all the way from Africa to India to Pakistan, and has been circulating on the Internet some time ago, and will soon come to China.

1. Causes of drought: From an environmental point of view, one of the main causes of locust plagues is caused by drought. Because in an arid environment, locusts are very beneficial for growth, reproduction and survival.

When locusts lay eggs, they generally lay their eggs in the soil, and the solid soil with a water content of about 15% is the most suitable environment for locusts to lay eggs. In times of drought, when the water level drops, the locusts grow quickly and multiply, and the water content decreases as a result. In addition, the amount of vegetation on the ground is very small, which leads to a large increase in the number of eggs laid by locusts, which in turn leads to locust infestations.

2. Living habits: The living habits of locusts are actually a major factor leading to locust infestations. Because locusts generally live in groups, if they are not controlled in time, they are very easy to become plagues.

The ability of locusts to reproduce is also very strong, and in a suitable environment, their breeding and cultivation capacity will be very terrifying. And locusts have a very mixed feeding habits and are able to feed on a variety of plants. Moreover, when locusts lay eggs, they will hide their eggs in deep ground, which is difficult to destroy.

In addition, the flying ability of locusts is also very strong, and it will be difficult to control it.

3. Climate warming: Climate warming is also easy to lead to locust infestation, especially in winter, when the temperature rises, which is very beneficial to the increase of locust overwintering eggs. In addition, various factors such as drought and grassland degradation can create a suitable environment for locusts to lay eggs.

Moreover, locusts are very adaptable, and can survive in an environment where many other insects and birds cannot survive. It also inhibits the activity of a filamentous fungus that causes locust disease, leading to a sharp increase in numbers. Therefore, there are experts who say that global warming will cause locust plagues to become more and more serious in the future, which will have a serious impact on food growth.

4. Excessive insect density: Duan Zhu has only conducted special data surveys showing that the excessive density of locusts is also an important factor causing locust plagues. Locust swarms are densely populated and line up in rows to move in the same direction.

Because locusts are a kind of isolated nymphs in the beginning. They tend to avoid each other, but if resources are scarce, they will affect each other. Then it becomes an orderly swarm of locusts, and the swarm of locusts will act in an orderly manner, and when it enters the habitat of neighboring locusts, it will cause more and more locusts to join, thus causing locust plagues.

Locust plagues are mainly caused by the arid climate. Because the arid environment is ideal for locusts to grow, reproduce and survive, soils with a moisture content of 10-20% are the most suitable for locusts to lay eggs. As a result, the locusts that multiplied in large numbers grew rapidly, forming a plague of locusts that destroyed crops.

Locusts, commonly known as grasshoppers, are one of the main pests, there are 10,000 species of locusts in the world, and there are more than 1,000 species in China. Among them, the East Asian locust is the most widely distributed and most harmful in China, and is a major agricultural pest causing serious locust plague in China. If a locust plague occurs, large numbers of locusts will eat up crops, causing severe economic losses and food shortages.

Therefore, locust plague is a very serious problem.

How the locust plague was formed

In general, locusts are best suited for spawning in soils with a water content of 10-20%, and will lay 4,000-5,000 eggs per square meter of soil, with 50-80 eggs per mass. In other words, there will be 200,000-400,000 locust eggs per square meter. In addition, locusts have a strong ability to reproduce and survive.

This shows how serious the locust plague is.

The main causes of locust plagues are drought, locust habits, climate change, and excessive insect density. Among them, locusts are polyphagous, social and have a strong reproductive ability, as well as the ability to fly. Therefore, it can be known that locusts are not only numerous, but also difficult to control.

In addition, rising temperatures and arid climates allow locusts to grow and reproduce, increasing the likelihood of locust infestations.