Occurrences and Control of Bactrocera dorsalis Hendel in Beijing
Since transportation of fruits from the south of China to north of China,Bactrocera Bactrocera was introduced into Beijing in the form of larvae or pupae.Biological characteristics of Bactrocera Bactrocera,effects of 7 pesticides and fruit bagging on control of Bactrocera Bactrocera in Ziziphus jujuba cv.Dongzao orchards were conducted by field investigation and indoor observation.Results showed that Bactrocera dorsalis had 4 generations per year with overlapped generations in Beijing.The adults occurred from May to November in which the peak period is at end of August.Bactrocera dorsalis overwinters at pupae stage in 0～3 cm deep soil and dropped fruits,but could not safely overwinter.We recommended that the important time to control the Bactrocera dorsalis is at the peak of eclosion period,with the approaches of chemical application with 2 500 times ME of 1％ emamectin benzoate and 4 000 times EC of 1.8％ abamectin,trap and kill the male insects,fruit bagging,remove of dropped fruit and other preventive measures.
NETL
NSTL
万方数据
维普
