Prickly ash pests include Zanthoxylum bungeanum, black velvet chafer, locust, yellow swallowtail, and golden worm.
Control method: starting from the beginning of April, continuous spraying of carbamoylase 3000 times solution or 40% omethoate emulsifiable concentrate 1000-5000 times solution 2-3 times can effectively control the damage of several pests. In the early spring, 80-100 times of omethoate is applied to the breast diameter of the trunk, which is characterized by thin and easy absorption of the pepper bark, which can play a role in preventing a variety of pests.
First, the sulphur sulphur mixture: spray 3-5 waves of stone sulphur mixture before germination. It can control aphids, scale insects, etc.
2. Drying method: After mid-March, apply the systemic pesticide at 15-20cm from the main trunk of the pepper tree or at the base of the main branch. The concentration is 1:20 (1 pesticide, 20 water), and the coating width is About 15cm, after coating, it is wrapped with plastic film. It can control narrow genomic insects, aphids, scale insects and the like.
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