Occurrence Regularity And Control Of Bactrocera Dorsalis In Pear Orchards In Suzhou

The oriental fruit fly, Bactrocera dorsalis (Hendel), is a devastating pest and it has caused serious losses in fruit and vegetable production in suzhou (it's secondary distribution) in recent years. The purpose of this research is to provide scientific and theoretical basis about controlling the population dynamics and combating of Bactrocera dorsalis (Hendel), through researching the damage, population fluctuation and integrated control technology of alien invasive pests, Bactrocera dorsalis in Suzhou.This study was conducted in pear orchards in Suzhou, monitoring the population dynamics of Bactrocera dorsalis (Hendel). The results indicated that an increasing peak appeared in september to october in Suzhou. The monthly mean temperature, monthly mean maximum temperature, monthly mean minimum temperature, monthly raining days and host plants were the major climatic factors influencing populations.In addition, humidity, temperature and pesticide were analyzed in relation to pupae of the fly. Some preliminary field research about controlling the fly were conducted to find the factors of controlling the elosion of pupae and of the population dynamics. Finally, the goal of servicing production practice in Suzhou, even in east China region, and of integrated control can be reached.