Where did the large number of locusts come from during the locust plague?

In the event of a drought or flood, swarms of locusts will appear in the air. As long as the locusts pass through, it can be said that there is no grass and no grains. If a farmer is infested with locusts during the planting process, the harvest may not be harvested.

Food is the only benefit for farmers, so they are also very afraid of these problems. Locusts are very heat-loving animals, and they will constantly wriggle during this season. Farmers are no strangers to locusts, except that they feed mainly on plants.

There are many species of locusts, about 10,000 species in the world. They are widely distributed and the locust swarms are very large. Not only wheat and rice, but also all plants that are grown can be eaten.

If the peasants do not have a harvest, they will cause great losses to the agricultural economy, and a year's hard work is equivalent to white planting. As long as the weather is hot and very dry, locusts can cause trouble everywhere. Farmers have also taken timely measures to rectify this phenomenon, and they will also eat locusts as food.

Nowadays, young people like to eat food that they have not eaten, and locusts just eat this food. Locusts are very nutritious and their meat is particularly tender. For example, some young people like to eat shrimp very much, and locusts have the title of flying shrimp.

Stir-fried with locusts and red peppers, it is not only crispy but also special to eat in the mouth. Put the locusts in an oil pan and fry them, so that they will have a good taste. This is a good use to reduce the loss of crops and to make them less harmful.

In general, we must not relax our prevention against locusts, and we must protect crops at all times. In the process of planting, we must take a look at which ones are in line with the right time, place and people. Only by taking possession of all these things can locusts not appear.

It is also necessary to find what the locusts are afraid of, so that the locusts can be prevented.

Locusts live mostly in tropical and temperate regions of the world, and are very heat-loving animals, and they often haunt drier regions, such as East Africa.

This is because of the rapid reproduction, and the production of locusts is very fast, which is why there are so many locusts.

<> locust disaster is easy to occur in the hot season, generally locusts are more likely to occur in forests, low-lying long grasslands and other areas, the adults of locusts mainly feed on crops, and the locusts are more nutritious in the adult stage, and a large amount of food is needed to meet the development and growth of adults, which will cause major economic losses in agriculture, forestry and animal husbandry, and locusts do not have the habit of clustering and migration, and are generally scattered in the fields and grass.

First, locusts are easy to occur

1. Locust plagues are more likely to occur when the weather is hot and dry, especially when dry weather comes, locust plagues are easy to occur, and locusts are generally more likely to occur in forests, low-lying long grasslands and other areas. The arid environment has many benefits for locusts to reproduce, grow and develop, and locusts can lay their eggs in the soil because the soil is relatively solid and the water content is 10%-20% more suitable for locust eggs.

2. Adults mainly feed on crops, and locusts supplement more nutrients in the adult stage, they bite a large number of plant leaves and flower buds with chewing mouthparts, resulting in gaps and holes, and in serious cases, they will eat up the leaves and flower buds of large areas of plants, resulting in major economic losses in agriculture, forestry and animal husbandry.

3. Locusts do not have the habit of swarming and migrating, they often live in one place, generally scattered in the fields and grasses, and the locusts mainly eat grasses, so they will also have certain harm to rice and legume crops.

2. How to prevent locusts

1. When the locust disaster comes, you can reduce the planting of rice, barley, corn, etc., which locusts like to eat, and change it to fruit trees, etc., and the locusts will not eat the food that is more difficult to eat, but this fundamentally cannot prevent and control locusts.

2. The control of locusts can also be solved from the natural enemy, when the locusts come, they can herd chickens and ducks into the farmland, and they can also be stocked with bees, frogs, lizards, etc.

3. Locusts also have a favorite place to live, they generally like to live in low-lying long grasslands, when locusts come, they can transform low-lying areas into fish ponds and pond landscapes to control locusts.

4. There are many chemical control methods, one is spraying on the ground, such as drone application; Or spray pyrethroid oils, both of which can effectively solve the locust plague.

The main reasons for the rampant formation of locusts can be summarized as follows:

1) The main locust species that form locust plagues have physiological ecological characteristics such as fast reproduction, large reproductive offspring, wide diet, large food quantity, and strong dispersal and migratory ability. East Asian locusts can occur 2 4 generations in 1 year, female adults after the mating of male and female locusts can lay eggs many times per generation, generally can lay 4 5 eggs in a lifetime, up to 12 eggs, each piece generally contains 50 80 eggs, the average total number of eggs laid in a lifetime is 300 400 eggs, and the total number of eggs that can be laid by individual summer locusts and autumn locusts can reach 1013 and 592 eggs at most. The egg mass of the desert locust contains 20 100 eggs, and the dispersed female can produce up to 120 eggs.

The social type spawns up to 1000 square meters in groups. It should also be noted that both the East Asian locust and the desert locust are parthenogenic, i.e. the female locust can lay eggs without mating, and the hatched offspring are all females, and their adults can mate to lay eggs or continue parthenogenesis. There are about 20 kinds of food plants in East Asian locusts, with a lifetime diet of about 60 80 g, and the adult stage eats 3 7 times more than that of the bug stage.

Swarms can spread for short distances, and adults of the social type can migrate over long distances. The desert locust can fly up to 1500 to 5100 km, and its flight experiments have shown that it can fly continuously for 17 hours. For example, the eggs of the Italian locust in Xinjiang can reach 140 square meters, and the eggs of the Siberian locust can reach 486 square meters.

2) Abnormal climate in the world and region, frequent droughts and floods, improper rise and fall of water conservancy projects or sudden changes, etc., will be conducive to the generation, existence or attention of some suitable conditions for locusts, poor grassland management, overgrazing, grassland degradation and improper human use of land resources, etc., are conducive to the rampant occurrence of locusts in some agro-pastoral ecotones.

3) Global warming, early warming of spring temperatures, hot summers, and warm winters lead to low mortality of locust eggs overwintering, and the occurrence of locusts is generally early, and the occurrence of East Asian locusts has a northward trend (the occurrence of second and third generations has occurred in the 1 2 and 2 generations and 2 and 3 generations of regions).

4) The investigation and monitoring of locust situation, water situation, drought situation and climate change are neglected, insufficiently grasped, untimely, or even wrong, and the monitoring and reporting control structure and the quality management level of its professionals are all greatly affected and played an extremely important role in locust control.

5) Flow changes (flow size, duration, water level fluctuations, floodplain area, etc.) and flow interruption changes (frequency, morning and evening, duration, length of river sections, etc.) in the Yellow River, Huaihe River, Haihe River and other river basins, as well as rivers and lakes in locust areas. The fluctuation of water level in reservoirs and coastal areas has a significant correlation and impact on the size and density of locust occurrence areas.