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草履蚧(Drosicha coupulenla Kuwana)是柿、核桃的重要害虫,也为害苹果、桃、梨、板栗等果树和杨、柳、香椿等树木。近几年该虫在石家庄市区对悬铃木、紫荆等绿化树危害日益加重。受害重者发芽推迟、树势衰弱,甚至出现大量枯枝,作者于1990-1991年春季对该虫在当地的发生和防治进行了观察。 活动规律 草履蚧在石家庄市一年发生一代。以卵在寄主附近的土缝里、砖石土块下越冬。翌年2月中旬,随气温回升开始出现若虫。孵
Drosicha coupulenla Kuwana is an important pest of persimmon and walnut. It also damages fruit trees such as apple, peach, pear and chestnut and trees such as poplar, willow and Chinese toon. In recent years, the insects in Shijiazhuang downtown Platanus, Bauhinia trees and other greening hazards are increasing. The victims of severe germination delayed, the tree weakness, and even a large number of litter, the author in the spring of 1990-1991 on the pest in the local occurrence and prevention were observed. Activity Law Carassius auratus occurred in Shijiazhuang City a generation a year. Egg in the host near the seam, masonry clods overwinter. The following year in mid-February, with the temperature rise began to appear nymphs. hatch