National locust is a good green tree species in China, its branches and leaves are dense, green shade like a cover, often used as an excellent shade tree and street tree. In recent days, when qilin personnel visited the front line, they found that the trunk of the national locust tree in the greening park spit out oblong "wood chips" like things, a closer look can not be seen, the wood beetle moth is very harmful, the so-called "wood chips" is its excrement, and not only on the trunk, under the tree has also accumulated a circle of wood beetle moth feces!
【1】The National Locust Wood Beetle Moth has many hazards:
The wood beetle moths that harm the national locust are mostly small wood beetle moths or small linear horn wood beetle moths, wood beetle moths often eat the xylem of the branches of the tree with larvae, the larvae feed up along the marrow, form a dense insect path in the xylem, there are several fecal holes on the branches, there are a large number of oblong oval feces discharge, the upper part of the affected branches become yellow and wilted, often causing the death of the whole branch and the whole tree, and it is easy to break in the wind.
[2] The occurrence of the national locust wood beetle moth:
2 years and 1 generation or 1 generation per year, all larvae overwinter in the affected branches and trunks. The first half of July is the peak of larval hatching. Hatching larvae swarm to feed on the egg shell after moth into the cortex, phloem damage, after 3 years of dispersion drilling human xylem, from the bark cracks to discharge fine yellow-brown insect dung and wood chips, severe bark is easy to peel off, trees or branches quickly withered, in October began to overwinter in the tunnel, injured trees, weakened trees, isolated trees are more seriously damaged.
【3】Control methods of the Chinese locust wood beetle moth:
Wood beetle moth hazards can be controlled by using the Cheng Tapping Package (1 bottle Cheng Tapping + 2 bottles of Royal Moth) with 15 kg of water to control the trunk spray, and the spray range is within 2 meters of the trunk from the ground.
