Will there be a locust plague in China? Because desert locusts can fly as high as 150 km with the airflow every day and cross the Red Sea and the Persian Gulf, the locust plague has spread to Kenya, Ethiopia, Somalia, Sudan, Uganda, Tanzania in East Africa, Iran, Yemen and Oman in West Asia, and crossed the Persian Gulf from Arabian Peninsula into Iran, Pakistan and India.
In view of the fact that the plague of locusts is only "one step away" from China, some people worry that desert locusts will cross the Yunnan-Tibet border and enter China. In this regard, Wang told the reporter of International Finance News, "There are indeed records of desert locusts in parts of Yunnan and Tibet in China, but they have not caused disasters. The locust plague in the history of our country is not desert locust, and there has never been desert locust plague in history. Although the locust swarm may enter the territory with the monsoon, the risk of desert locust disaster is low with the locust prevention and control ability in China. "
Desert locusts Desert locusts have two short horns, 1 compound eyes, three single eyes, developed hind legs, and can jump dozens of times longer than their bodies. Desert locust is a facultative diapause insect, which overwinters with eggs in oocysts in soil. When locusts grow up, they feed on plant leaves. Grasshoppers like to eat reed, barnyard grass, white grass, dog tooth grass, Artemisia, shrimp grass and Salicornia bigelovii Torr, and have no obvious phototaxis for a long time.
These insects usually live alone, and only in some cases will they become richer, change their behaviors and habits, and become social.
When grasshoppers grow up in the early days, they are harmless and few in number, and do not pose a major economic threat to agriculture. But when the conditions are suitable for drought, vegetation grows rapidly, and the brains of locusts
5- hydroxytryptamine was quickly stimulated, which made the desert locusts, which used to live alone innocently, become a group of greedy and rampant pests.
This triggered a series of dramatic changes: locusts began to multiply in large numbers, and when their population was dense enough, they began to live in groups and roam (described as migration), forming winged adults in the community, and quickly depriving fields and causing damage to crops.
Recently, East African countries including Kenya, Somalia and Ethiopia are suffering from the worst desert locust disaster in 25 years.
Desert locust infestation in East Africa has caused hundreds of thousands of acres of farmland to be damaged. By the end of 65,438+February last year, nearly 360 billion locusts had destroyed 0/75,000 mu of farmland in Somalia and Ethiopia, of which nearly 40 billion locusts had arrived in neighboring countries of China, India and Pakistan, and there was a trend of spreading to the northeast. It is reported that desert locusts have invaded Sindh province, Pakistan's second largest cotton base, and Punjab province in the northeast, and local crops have basically failed; The plague of locusts will hit India, which will reduce the country's food production.
30%-50%。