In which part of China has there been a locust plague! Hurry!!

A few days ago, Xinjiang came.

The locust plague in China is as follows: From an environmental point of view, it is mainly caused by drought.

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.

Causes: Locust plague is easy to flood after warm winter, global warming, especially the rise of winter temperature, is conducive to the increase of locust overwintering eggs, providing "eggs" for the outbreak of locust plague in the second 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.

1. There was a time during the Tang Taizong period, but Tang Taizong personally chewed locusts when he was exploring the disaster.

2. During the Chongzhen period of the late Ming Dynasty, there was a drought and locust plague in Shaanxi, Zhang Xianzhong and Li Zicheng joined the rebel army at this time 3. The White Lotus Rebellion in the Qing Dynasty was also because of the locust plague.

In the Staropol region of southern Russia, about 267 000 hectares of pastures and arable land were infested by locusts.

China's Liaoning Province Saw the First Locust Plague in a Year of Drought for the First Time in a Century The western states of Nevada, Utah, and Idaho were all plagued by locust plagues, and the disaster in Idaho was the worst since World War II.

Millions of locusts swarmed to Eilat, Israel's Red Sea city. Wait.

Listen to the old man tell me that there was also a locust plague in China a few decades ago.

Categories: Education Academic Exams.

Analysis: It has long been noted that severe locust plagues often go hand in hand with severe droughts. There is a record of "locusts in the drought" in ancient books in China.

Several major locust plagues in Africa in recent years have also been linked to severe droughts in the region. The main reason for this phenomenon is that locusts are warm, dry insects that prefer to breed and survive, and that arid environments have many benefits for their reproduction, growth and survival. Because locusts lay their eggs in the soil, which is relatively firm, a water content of 10 to 20 percent is best for them to lay eggs.

Drought causes locusts to multiply and grow rapidly, causing disasters in two ways. On the one hand, in dry years, the number of eggs laid by locusts increases dramatically, sometimes up to 4,000 to 5,000 eggs per square metre of soil, with 50,800 eggs per mass, or 200,400,000 eggs per square metre. At the same time, in dry years, the water surface of rivers and lakes shrinks, and low-lying land** also provides more suitable places for locusts to lay eggs.

On the other hand, plants grown in arid environments have a lower water content, and locusts feed on them, growing faster and having higher fertility.

On the contrary, rainy and humid conditions have many adverse effects on locust reproduction. The high water content of the plants that the locusts feed on will delay the growth of locusts and reduce their fertility, and the rainy and humid environment will also make locust epidemics, and rain and snow can directly kill locust eggs. In addition, the increase in natural predators such as frogs will also increase the mortality rate of locusts.