葱斑潜蝇又名葱潜叶蝇、韭菜潜叶蝇,农民又叫它葱“鬼画符”。幼虫在叶组织内蛀食叶肉,留存表皮,形成小小隧道。为害初期是不引人注目的曲线状小白斑,逐步发展成像一团乱麻状的白斑。严重时叶受害率达100%,白斑累累,长势衰弱。白斑绕葱管一圈还会造成上半段叶变黄枯死。葱... Onion leafminers, also known as green onion leaf miner, leek leaf miner, peasants also call it onion “ghost symbol.” Larvae in the leaf tissue moss on the leaf, leaving the epidermis, the formation of a small tunnel. Early damage is not noticeable curvilinear white spots, and gradually develop a group of messy white spots. Severe leaf damage rate of 100%, white and tired, growing weak. White spots around the onion tube will cause the upper half of the leaves turn yellow dead. shallot...