oleivora(Ashmead),Parlatoria pergandii(Comstock)and Panonychus citri(McGregor)were dominant species of pest,and there was not dominant species of natural enemy and neutral arthropod in the chemical control orchard.

• 化防园害虫优势种为黑刺粉虱、桔皱叶刺瘿螨、糠片蚧 (Parlatoriapergandii (Comstock) )和柑桔全爪螨 (Panonychuscitri (McGregor) ) ;