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瘤坚大球蚧在兰州主要危害刺槐和国槐。1年只发生1代。4—5月间危害严重。第二龄若虫大都在1—2年生树枝上越冬。其雌成虫、雄成虫、卵、若虫和蛹的平均发育期分别为27.2、2.7、25.1.321.8和14.5天。不能孤雌生殖。产卵量平均为2888拉。温湿度的变化,对此虫有重大的影响。在自然界中,有一种寄生蜂和一种寄生蛾对它有明显的抑制作用。用50％氟乙酰胺(1:1500—1000)、50％杀螟松乳剂(1:500—350),或50％三硫磷乳剂(1:1500—1000)化学防治幼龄若虫效果很好,校正死亡率在94.3—99.7％.
Large knobby ball knob in Lanzhou, the main hazards of black locust and Sophora japonica. 1 generation only occurred a year. Between April and May serious harm. The second instar nymphs mostly winters on 1-2 year old branches. The average developmental stages of female adults, male adults, eggs, nymphs and pupae were 27.2, 2.7, 25.1.321.8 and 14.5 days, respectively. Can not reproduce parthenoise The average number of eggs laid is 2888 pull. Changes in temperature and humidity, the worm has a significant impact. In nature, there is a parasitic wasp and a parasitic moth obvious inhibition of it. Chemical control of young nymphs with 50% fluoroacetamide (1: 1500-1000), 50% fenitrothion (1: 500-350), or 50% , Corrected mortality at 94.3-99.7%.