The treatment of infected trees should be carried out in the form of _ _ _ _ according to local conditions.

According to the local conditions, the infected trees are treated by biological control, chemical control and legal felling.

Pest control refers to the prevention and control of pine trees with pine wood nematodes to prevent the spread and spread of pine wood nematodes. According to local conditions, biological control, chemical control and logging according to law can be used as control methods.

Biological control refers to the use of natural enemies, parasitic insects and other biological measures to control or reduce the harm of pine wood nematode disease. For example, parasitic insects such as Monochamus alternatus can be released on pine trees to control the number of pine wood nematodes.

Chemical control refers to the use of chemical agents to kill pine wood nematodes or their natural enemies. Common chemicals include cartap, omethoate and other pesticides. When using chemical agents, we should pay attention to the selection of appropriate agents, concentrations and application methods to avoid adverse effects on the environment and human beings.

Logging according to law refers to logging pine trees with Bursaphelenchus xylophilus in accordance with relevant national laws and regulations. The harvested wood needs to be treated to prevent the wood with pine wood nematodes from flowing to the market.

Effective measures to prevent the spread and spread of Bursaphelenchus xylophilus;

1. Strengthen quarantine: carry out strict quarantine on Pinaceae plants and their products, so as to prevent the infected wood from entering the market and the loss and spread of infected wood. Strengthen the registration and supervision of wood-related units and individuals, carry out quarantine regularly, and investigate and deal with illegal logging, transportation, management, processing, utilization and use of infected trees and their products according to law.

2. Take biological control measures: use natural enemies and parasitic Kunzhong biological measures to control or reduce the number of Bursaphelenchus xylophilus. For example, parasitic insects such as Monochamus alternatus are released from pine trees to control the number of pine wood nematodes.

3. Take chemical control measures: kill three species of pine wood nematodes or their natural enemies with chemical agents. Common chemicals include cartap, omethoate and other pesticides. When using chemical agents, we should pay attention to the selection of appropriate agents, concentrations and application methods to avoid adverse effects on the environment and human beings.

4. Control of diseased trees: control pine trees with Bursaphelenchus xylophilus to prevent the spread and spread of Bursaphelenchus xylophilus. It can be controlled by ground spraying or aircraft spraying, and the sustained-release drugs with high efficiency, low toxicity and environmental protection are selected for continuous application for many times. At the same time, you can also selectively choose trap trapping, vertical tree trapping, punching and injecting drugs, natural enemy control and so on.

5. Strengthen publicity and education: Strengthen publicity and education on the prevention and treatment of Bursaphelenchus xylophilus, and raise public awareness of the hazards of Bursaphelenchus xylophilus and prevention awareness.