Locust plague was the most common disaster in ancient times, so why did it rarely occur in modern ti

Because in modern times, there are many means that can be used to control locust plagues, such as returning farmland to forests, controlling deserts, and so on.

Because in modern times, with the continuous advancement of urbanization, the hatching grounds for locusts to reproduce larvae in large areas have been greatly reduced, and even if there will be large-scale locust swarms, what awaits them is pesticides to kill pests, so there have been few large-scale locust plagues in modern China.

Because in ancient times, agriculture was the main productive force, and the scientific and technological ability was very low. In modern times, the productivity of science and technology has been greatly improved, and it is possible to prevent locusts and kill locusts, so locust plagues rarely occur.

The locust plague was the most common disaster in ancient times, and it rarely appeared in modern times because the farmers used some chemical drugs to control it, and they found its natural enemies.

Locust plague is the most common disaster in ancient times, so in modern times, how rarely there is a reason, modern science and technology are developed, many pesticides have a great impact on them, resulting in a decrease in their number.

The locust plague is the most common disaster in ancient times, and it rarely appears in modern times, because all aspects of modern development are very mature, and locusts are quickly eradicated.

Because of the use of pesticides in China, this problem has been fundamentally solved, the reproduction of locusts has been greatly reduced, coupled with the increasing progress of science and technology, the prevention and management of locust plagues by human beings are getting better and better, so the locusts in China are no longer visible

Because of proper governance. In ancient times, there were no pesticides, and the level of productivity was very low, so there were often locust plagues, but now there are pesticides, and there are technical cultivation and production, so there are no more.

That's because now we're starting to control locusts. And it has achieved very good results, so now there are no locust plagues in China.

After the reform and opening up, with the advent of scientific spring and the strengthening of people's environmental awareness, especially the rise of disaster reduction activities and disaster science, more and more attention has been paid to the research on locust plague and locust control in ancient China.

A locust plague is a catastrophe caused by locusts. In the event of a locust plague, a large number of locusts will devour the fields, completely destroying agricultural products, causing severe economic losses and famine due to food shortages. Locust plagues often go hand in hand with severe droughts, and they move in groups from arid areas to low-lying and flood-prone areas.

There is a so-called saying that "locusts will be in extreme drought" and "locusts will be in a long drought".

Locusts must lay eggs on land with less than 50% vegetation cover.

From an environmental point of view, drought is mainly caused by drought disasters.

Habits. From the point of view of its living habits, it is mainly as follows:

1) It has a habit of living in groups.

2) It has strong fecundity.

3) It is polyphagous, that is, it can eat many kinds of plants.

4) It has a strong ability to fly and is difficult to control.

5) Its eggs are hidden deep in the ground and are difficult to destroy.

Locust plagues are prone to flooding after a warm winter.

Global warming, especially the increase in winter temperatures, is conducive to the increase of locust overwintering eggs, providing "eggs" for the outbreak of locusts in the following year. In addition, the combination of climate warming, increased drought, grassland degradation and other factors will provide suitable breeding grounds for locusts to lay eggs, and locusts have a strong ability to adapt to drought, because other insects and birds cannot survive in this situation, and a filamentous fungus that can cause locust disease is suppressed, so its number has increased significantly. Therefore, experts**, with the trend of global warming, the scale of locust plagues will become larger and larger in the future, which will have a serious impact on China's food production.

The formation of locust plague is related to the drought of the climate, "locusts at the end of the drought".

The causes of locust plagues: 1. Causes of drought; 2. Habits; 3. Climate warming; 4. The insect density is too large.

Locust plagues generally occur in the northern regions of our country, and a large number of locust plagues will cause farmers to lose their crops. So how did the locust plague form? Let's give you a detailed introduction.

01 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.

02 Habits: The habits of locusts are actually a major factor in 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 reproduction can 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.

03 Climate warming: Climate warming can also easily lead to locust infestations, especially in winter, when the temperature rises, which is very beneficial to the increase in 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.

04 Excessive insect density: Special data surveys have shown that the excessive density of locusts is also an important factor in locust plagues. Locust swarms are densely populated and line up 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.

05 Surrendering locusts and chemically killing locusts is the best way. Chemical deworming is a good way to subdue the infestation of locusts. Not only are there fewer locusts, but the farmer's crops are also well harvested.

For a species like locusts, which is harmless, although it cannot make them completely in our lives, it is also a great credit to reduce the harm it does to us.