When the big bag moth is seriously harmed, only leaves and leaves are left in the leaves of Fatong. Its larvae take leaves, shoots and twigs. When they occur, the leaves of the whole tree can be eaten for a few days, and bald twigs will remain, which will seriously affect the growth of the trees and cause the branches to wither and the whole plant to die. The first instar larva only eats the epidermis of the leaf blade. With the increase of the worm age, the food intake is increased. The large moth moth eats leaves of 36 square centimeters throughout its life, and the feeding time is mostly in the morning, evening and cloudy days. In mid-to late October, the larvae gradually transferred from the branch shoots, and the bags were fastened to the branches with silk and the bags were closed with silk for winter.
After manual removal of fallen leaves in winter, the pockets of the big moth are very obvious and can be removed manually to concentrate the larvae of the moth.
Chemical control optional agents include 90% crystal trichlorfon 1000 times, 2.5% deltamethrin EC 2000 times solution, 50% phoxim EC 1500 times, etc., which are effective in controlling young larvae of the big moth.
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