How to remedy Zhou Cun's discovery of Belarus in the United States?

1, strengthen quarantine. It is strictly forbidden to transport seedlings in epidemic areas abroad without quarantine or treatment, and the epidemic areas actively carry out prevention and control to effectively control the spread of the epidemic.

2. artificial control. The larvae found the net curtain behind the net before the third instar, and cut it off manually. If the larvae have dispersed, before the larvae pupate, the trunk is tied with grass to trap the pupated larvae, and the pupated larvae are treated regularly by designated personnel.

3. Use the sex attractant of Hyphantria cunea or environmental protection insect sex attractant to trap and kill adults. In the adult stage, the bait core is put into the trap, and the trap is hung in the forest, so as to directly trap and kill male adults, block the copulation of pests, reduce the reproduction rate and achieve the purpose of eliminating pests.

4, the use of biological and chemical agents spraying prevention and control. Early detection and prevention should be done during the larval damage period. In the prevention and control, it is important to check whether mulberry, Platanus acerifolia, Ailanthus altissima, Ulmus pumila, Hypericum perforatum, Peach Tree, Bai La and other tree species have larval hazards. If there are larval hazards, it is necessary to check the jurisdiction and prevent them in time. 400-fold solution of Bt emulsion and 2500-fold solution of 2.5% deltamethrin EC were selected. Spraying 80% dichlorvos EC 1000 times solution and 5% Laifuling 4000 times solution can effectively control the insect. .