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Chemical control: adult emergence period, with 5% Rui Jin special 1000 ~ 1500 times liquid, or 2.5% deltamethrin 3000 times spray control. For green onions where onion sprouting has occurred, use 50% phoxim 800 times, or 90% trichlorfon crystals, or 80% trichlorfon WP 1000 times, or 40% dimethoate 1000 times spray Or irrigate.