Pyrus can have many generations a year, there are 2 to 3 times the peak, open spring pear leaves, flowering period, the adult overwintering breeding, one generation after the damage gradually increased. The first peak of damage occurred from May to June, and the second peak occurred from July to August. The pear wood lice is one of the main insect pests of pear trees. The early stage of prevention and control of insect pests is light, and the control is poor or non-preventive. Because the insect is trapped in the leaf, and it is covered with wax, it is difficult to control conventional Pesticides. It should be used to prevent and control pesticides with strong permeability or systemic absorption. Control agent: (1) Use 10% hypertonic imidacloprid 1500-2000 times; (2) Use 40% phoxim 1000 to 1500 times; (3) Spraying with 1.8% abamectin from 6000 to 10000 times.
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Pears control
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