Yong zongrong Ningbo April 21 news special reporter Zhu Qiong reported: biological control into Ningbo garden maintenance new practice. In late April, in Lanjiang Greenland, Jiangbei District, Ningbo City, the Municipal Landscaping Center, in collaboration with jiangbei maintenance staff, placed the velvet nails near the plane tree trunk insect road with traces of Tianniu activities, kicking off the prelude to the biological control of diseases and insect pests in the garden industry in our city.
According to reports, with the acceleration of the exploration and research process of the "biological control" of urban landscaping in our city, the advanced concept of green plant protection serves the development of urban landscaping. The traditional conservation measures basically use the method of pharmaceutical control, which kills some beneficial insects while killing insects, which affects the ecological environment to a certain extent. In order to avoid the pollution caused by chemical agents and protect the ecological environment more effectively, biological control is an environmental protection prevention and control method advocated by the urban management garden industry in our city.
In spring, the celestial bull endangers plane trees, willow trees, luan trees, red maples, cherry blossoms, begonias and other trees, resulting in different degrees of damage to their branches, stems or roots, prone to safety accidents such as broken branches and tree lodging, and will cause tree weakness and death when serious. The celestial bull overwinters through the trunk moth, and in the spring the larvae nibble on the trunk until the xylem, which is more difficult to control.
The velvet beetle is a natural enemy of the celestial cattle insects. With a strong ability to search for Tianniu larvae, as long as the adults are placed in the gaps in the bark, they will find the old mature larvae, pupae or freshly feathered adult insects and begin to lay eggs .. They lay their eggs near the larvae of the Tianniu, and in early May the first generation of velvet parasitic larvae hatch and parasitize, multiply, and pass them on from generation to generation until they have destroyed the Tianniu, spread their wings and migrate, looking for new worm paths, and repeating the same work.
The Municipal Landscaping Center requires the maintenance unit to conduct fixed-point observations on the release area, make relevant experimental records, and provide effective data for the prevention and control effect of Tianniu's natural enemies in the later period.