First, the hazard characteristics The larvae harm the buds, leaves, make them into holes and nicks, severe when the leaves will eat light. Second, the morphological characteristics Adult body length 10 to 15 mm, gray-winged brown, tentacles orange-brown, plume, both front and rear wings are dark gray spots. The larvae have a body length of about 45 mm and grayish-green on the ankles. There are multiple black vertical lines and gray-black patterns. Three pairs of chest feet, one pair of abdominal feet and one pair of hip feet. The larvae are black and there are 6 white ring patterns in the ankle. Tendon length 10 ~ 15 mm, spindle-shaped, green at the beginning, after the yellow to reddish-brown. Third, living habits occur one generation per year, with crickets in the soil 5 to 10 cm deep winter. In late March of the following year, the adult began to emerge. In early spring, more rain favored its occurrence. Fourth, prevention and control methods (A) orchard fall out. (b) A plastic film with a width of about 10 cm is tied at the base of the trunk. The lower part of the plastic film is compacted with soil, and 2.5% of trichlorfon powder is sprayed around it to prevent adult insects from entering the tree and kill adult and newly hatched larvae; The plastic film is coated with butter or used motor oil to stop the larvae from growing on the tree. (c) Shake off and kill larvae. (d) This insect is particularly sensitive to pyrethroid insecticides, so its control effect is significant. Pharmacy can use 2.5% Kung Fu EC 4000 times solution, 20% chlorhexidine EC 3500, 50% rifain EC 4000, 2.5% EC 3500, 50% kill Pine EC 1000 times and so on.
Plant/Animal Extract
Plant Extract,Animal Extract,Hawthorn Leaf Extract
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