Green Society Volunteers Reflect the Panic of Dalian Air Defense

## Recently, Dalian Modern Agricultural Production Development Service Center drafted the Dalian local standard "Technical Regulations for the Prevention and Control of Pine Wood Nematode Disease Vector Insects by Light Helicopters (Draft for Solicitation of Comments)" and solicited opinions from all walks of life at the same time
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This standard mainly provides relevant descriptions and regulations on flight defense operation design, operation preparation, flight operation, flight monitoring, and inspection of prevention and control effects
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Source: Dalian Municipal Bureau of Natural Resources Pine Wood Nematode, also known as pine wilt disease, is a forest disease.
The main pathogen commonly recognized is Pine Wood Nematode, which is a plant parasitic nematode of the genus Umbelliferae, which passes through the pine brown sky.
Vector insects such as cattle spread in pine trees, causing pine tree pests
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In October 2016, pine wood nematode disease was discovered in Dadingshan, Shahekou District, Dalian.
This was the first outbreak of pine wood nematode disease in Liaoning Province, directly affecting more than 1 million mu of pine forest vegetation in Dalian
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The main measure of Dalian for comprehensive prevention and control of pine wood nematode disease is to use light helicopters to spray pesticides and biological agents in the forest
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It is reported that from 2017 to 2020, Dalian has carried out flying defense for 4 consecutive years
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Volunteers from the Green Society observed that although flying control operations have achieved certain results in the prevention and control of pine wood nematode disease, they have also caused a certain degree of damage to the surrounding ecological environment and brought inconvenience to the lives of residents
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For example, 1) the number of insects such as praying mantis, ants, and crickets in the flying defense area has dropped sharply; 2) the number of birds that feed on insects has decreased; 3) the flying defense time is in the midsummer, and residents close doors and windows tightly and cannot perform outdoor activities , Affecting the lives of residents, some residents still have slight physical discomfort; 4) Dalian is located in a hilly area, the main urban area is surrounded by mountains, and some residential buildings are built by splitting hills.
It is very close to the anti-flight operation area.
And "Nearby residents
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Picture source/provided by volunteers In addition, the "Technical Regulations for the Prevention and Control of Pine Wood Nematode Disease Vectors and Insects by Light Helicopters (Draft for Comment)" made the following requirements for pesticides: For other biological and ecological environmentally safe pharmaceutical products, the selected drugs should have been registered or approved by an authoritative institution, and the three certificates should be complete and within the validity period..
Meet the requirements of GB/T 8321, GB 20813 and NY/T 1276
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The use of pesticides in rotation or alternate use to carry out prevention and control
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” At the same time, it is mentioned that “China's forestry currently mainly uses 2%-3% thiacloprid microcapsule suspension
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” Source: "Technical Regulations for Controlling Pine Wood Nematode Disease Vectors by Light Helicopters" (Draft for comments)" It is reported that the drugs used in Dalian's flight control operations in previous years were mainly thiacloprid
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Diacloprid is a new type of chlorinated nicotinic insecticide
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Its mechanism of action is similar to that of other neonicotinoids.
Pesticides are similar.
They damage the nervous system of insects by stimulating nicotinic acetylcholine receptors
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Thiacloprid has a wide range of insecticides, and is generally used to control piercing and chewing mouthparts, such as aphids, planthoppers, and thrips.
Therefore, it is widely used in the prevention and treatment of vegetables, fruit trees, cotton, rice, wheat and other crops
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According to a letter from volunteers, Dalian has carried out multiple pesticide airdrops in urban areas for four consecutive years in order to prevent and control urban forest diseases and insect pests, which has caused many residents.
The panic and dissatisfaction
provided by the source/volunteers of residents is not unfounded.
Due to its potential reproductive toxicity and carcinogenic risk, thiacloprid has been banned in France and other EU countries since September 1, 2018 , And the European Commission has announced the prohibition of any outdoor use of thiacloprid, and will no longer approve the registration of thiacloprid use from January 31, 2020, and related products will also withdraw from the EU market
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Secondly, thiacloprid is against other insects.
It also has a wide range of lethality
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In addition to forest diseases and insects, the number of other insects on the forest floor in the relevant area has also decreased, causing damage to the local ecosystem
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The problem of forest pests should be properly solved by the source/volunteer, but are the factors such as the safety distance and wind direction for flying prevention fully considered? Should long-term monitoring of insects and biodiversity damage caused by flight control be carried out? And make it public in a timely manner, and adopt a variety of more active measures to carefully answer the doubts of the people? The Green Society Research Office hopes that this matter will attract the full attention of relevant departments and consider adopting more reliable biological control methods to comprehensively control forest pests, such as pests and birds, or the second best method, with precise identification of pests Scope, selection of plants, selection of tablets, scientific and precise medication to reduce damage to the surrounding ecological environment, is also an option
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