扶桑绵粉蚧生物学特性研究初步

Preliminary Study on the Biological Characteristics of Phenacoccus solenopsis Tinsley

摘要: 采取踏查法、田间观察和室内研究相结合的方法，探明扶桑绵粉蚧在苏州地区1年发生9代，世代重叠严重，存在雌雄二型现象，营兼性孤雌生殖。以成虫在土壤或枯枝落叶中越冬，来年4月初结束越冬，5月底数量开始增长，7~9月为盛发期，10月中下旬虫量开始减少，11月进入越冬。在苏州地区扶桑绵粉蚧有3种天敌，班氏跳小蜂为优势种。

Abstract: Field investigation and laboratory study, the results showed that Phenacoccus solenopsis Tinsley occurred for 9 generations a year in the Suzhou area, and the generation overlapped seriously. There existed sexual dimorphism and facultative parthenogenesis. To adults in the soil or litter in the winter, in early April next year to end the winter, the end of May began to increase the number of 7 to 9 months for the peak period, the amount of insects began to decrease in mid to late October, intering began in November. Three species of natural enemies were found in Suzhou, among which Aenasius bambawalei Hayat was the dominant species.