前言白蜡树具有耐盐碱、抗涝、抗污水能力强的特性,它生长迅速、是具有发展前途的用材和城市绿化树种。但在它的生长过程中易遭受白蜡绵蚧的严重危害。据1983年对郑州市农业路两旁的白蜡树调查资料表明,有虫株率高达100％,每个芽鳞上平均有越冬若虫5.9头。树被害后,树势衰弱,轻者发芽较正常树推迟15～20天,重则枝梢枯死, Foreword Ash tree has the characteristics of resistance to salt, waterlogging, anti-sewage ability, it grows rapidly, is a promising material and urban afforestation species. However, it is susceptible to the serious damage of the white waxy mealybug during its growth. According to the survey of ash trees on both sides of Agricultural Road in Zhengzhou City in 1983, the number of insect strains was as high as 100%, with an average number of overwintering nymphs on each bud scale of 5.9. After the tree was killed, the tree weakness, light germination than normal trees postponed 15 to 20 days, while the shoots died,