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桑白蚧是桃产区的重要害虫之一。津郊桃园普遍发生,红光农场一九七四年以前桃树被桑白蚧为害严重,枝条被害率达90％以上,桃果被害率达30—50％,结果枝组不断死亡,树势衰弱,使生产受到损失。我们从一九七二年开始连续三年对桑白蚧生活史进行了观察并实施有效的防治措施,控制了桑白蚧的危害。一、形态特征成虫:雌虫蚧壳圆形,略隆起,灰白色,壳点略偏,虫体长约0.98mm,橙黄或桔红
Morus alba is one of the important pests in the peach area. Peach Garden in the suburbs of Tianjin generally occurred before the red farm in 1974 before the Peach was severely damaged by mulberry white scales, branches of more than 90% rate of damage, peach fruit damage rate of 30-50%, the results Zhizu continuous death, frail weakness , So that production losses. Since 1972, we have observed the life history of mulberry white scale for three years in a row and implemented effective prevention and control measures to control the harm of mulberry white scale. First, the morphological characteristics Adult: female scale scale shell round, slightly uplift, gray, shell point slightly off, body length 0.98mm, orange or orange