China has declared it as a dangerous pest in the quarantine of imported plants, and the quarantine is extremely strict. It stipulates that "fruits and vegetables (tomatoes, eggplant, peppers, etc.) produced abroad should be imported. It is forbidden to enter the country. If fruits and vegetables are found during the entry inspection, they will be confiscated and destroyed by the port inspection and quarantine personnel. "

Definition of biological invasion: biological invasion refers to the phenomenon that a certain organism is introduced naturally or artificially from other places and becomes wild, causing certain harm to the local ecosystem.

For example, the Mediterranean fruit fly is the world's number one fruit killer and one of the most destructive agricultural pests in the world. Its menu is very rich. He ate more than 400 kinds of fruits and vegetables. I especially like pears, peaches, oranges and other fruits with high sweetness. They can not only eat, but also live. It takes only 18-33 days to complete the transformation of one generation, and they can lay 500 eggs at a time, which has caused great damage to the ecological environment.

Extended data:

Alien species invaded China;

More than 400 alien species have "completely" invaded China. Among the world's 100 most threatened alien species published by IUCN, more than 50 species have invaded China, among which 1 1 species have caused economic losses to China as high as 57 billion yuan every year.

China has become one of the countries with the worst alien invasion. In the past 10 years, at least 20 new alien species invaded China, with an average of about 2 new species added each year. The foreign invasion shows the trend of increasing in number, accelerating in frequency, expanding in spread, aggravating in harm and increasing in economic loss.

The known alien invasive species in China include at least 300 invasive plants, 40 invasive animals and 1 1 invasive microorganisms. Among them, eight invasive plants such as water hyacinth, Alternanthera philoxeroides, Spartina alterniflora and Mikania micrantha have brought serious harm to agriculture and forestry, and the most serious pests are American white moth, pine wood nematode, potato beetle and bullfrog 14 species.

Reference: Baidu Encyclopedia-Biological Invasion