First, the hazard characteristics of larvae eat walnut fruits and seed kernels, damaged fruits become black, often fall off sooner. Second, the morphological characteristics Adult body length 4 to 7 mm, wingspan 12 to 15 mm. The body is dark brown and shiny, and its belly is silver-white. The rear feet are long and rise above the back when inhabited, hence the name of extremities. The eggs are oval in shape and are milky white at the time of first birth, yellow-white in color, and reddish brown before hatching. Third, the habits of adults live in a nocturnal cycle, the eggs are scattered in the gap between the two fruit, a few produced in the stems, lice, leafhoppers or leaves. Fourth, prevention and control methods (A) late fall or early spring deep turn the tree plate, you can eliminate some of the larvae. (b) timely removal of pests and picking up the fruit, and its centralized treatment. (c) Spray the pesticide on the ground under the canopy before emergence of adult feathers. (D) The spawning period can be used for 50% of the killing pine oil 1000 times, 10% of Uranus EC 6000 ~ 8000 times, 20% of the speed of killing 280 ~ 3000 times for the prevention and treatment.
Naringin Dihydrochalcone,Glutathione for Cosmetic,Natural Ferulic Acid
Senyuan Biological Technology Co., Ltd. , http://www.hnvitamins.com