东方盔蚧在华县地区发生普遍,主要危害桃和葡萄,桃受害严重面积占 35%,葡萄占 41%。其他奋、苹果、梨、山楂等果树均有不同程度受害。 经多次试验东方盔蚧的防治最佳时期为3月上、中旬,这一时期是东方盔蚧若虫越冬后活动初期,体表蜡质少,抗药性弱,而果树还处于休眠状态,抗药性 Oriental helmet scale occurs in the Huaxian area, the main hazards of peaches and grapes, peach victims accounted for 35% of the serious area, grape accounted for 41%. Other Fen, apple, pear, hawthorn and other fruit trees have varying degrees of damage. After many tests, the best time to prevent and cure the oriental helminthes was March and mid-March. During this period, the oriental helminthes nymphs were overwhelmed and had low body surface wax and weak drug resistance, while the fruit trees were still in dormancy. Medicinal properties