桃树东方盔蚧的发生和防治方法王合，梁泊，于小春（北京平谷县政府果品办公室，１０１２００）东方盔蚧又名扁平球坚蚧，可为害各种果树和林木。以若虫、成虫危害枝叶和果实，为害期间，排出无色粘液，不但阻碍叶的生理作用，还招致蝇类吸食和霉菌寄生，严重发生时，致使... Occurrence and control of perennial tree-scale insects Wang He, Liang Bo, Yu Xiaochun (Beijing Pinggu County Government Office of Fruit, 101200) Oriental helleborus, also known as flat-crested caddice, can damage a variety of fruit trees and trees. In order to nymphs, adults harm the branches and leaves, fruit damage, excretion of colorless mucus, not only hinder the physiological role of the leaves, but also lead to parasitic flies and fungi parasites, a serious occurrence, resulting in ...