Ground control Before larvae are excavated, use 500 ml of 40% methylisotriphos cream per 1/15 hectare (1 mu) and 150 kg of water; or use 50% Bataan WP 1000 times, spray on the tree tray. On the ground, the interval of 15 to 20 days, and then spray once, can effectively control. Tree control In the spawning period and the larval hatching period, the trees are sprayed, and 50% of the pine nut oil is used for 1000-1500 times, or 10% bifenthrin is 1000-2500 times, or 50%. Rice Flocculant EC 1000 to 1500 times spray. Hawthorn red spiders artificially curb the old rough skin on the branches to reduce overwintering. Before mid-August, a bundle of grass was tied to the branches that had been scraped off the bark to trap the larvae that were about to get overwinter. In winter, they took off the haystacks and burned them to destroy the pods. Drug control before and after wintering and cocooning, and hatching of young hatchlings, with 5% Nisolulur EC 1500 to 2000 times, or 50% WK 250 to 1500 times, or 20% dicofol EC 600~ 1000 times, or 50% Bromoxime EC 1000 ~ 1250 times spray. In the autumn, the artificial control of S. gracilis will scrape the larvae hidden in the bark layer and reduce overwintering larvae. Saw or cut off dead dead trees or dead branches and clean out orchards and burn them. Drug control During the period of adulthood from June to August, 80% of dichlorvos EC 1500 times, or 40% Dimethoate 800 to 1000 times, or 50% Malathion EC 800 to 1500 times. The artificial control of Piedmont butterfly was used to prune the leaf sac on the tree after deciduous deciduous to early spring and combined with winter and spring to eliminate the overwintering larvae and reduce the pests. The drug control sprayed the overwintering larvae during the outing period and the egg hatching period. Drugs can be used: 50% aldicarb WP 1000 to 2000 times, 10% permethrin EC 2000 to 3000 times, 20% chloramphenicol 200 to 400 times, 50% schisandra pine EC 1000~ 1200 times liquid spray.
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