title: [Investigation on occurrence of lycium pests and their natural enemies].
abstract: OBJECTIVE
  To Provide the scientific basis for controlling the lycium pests.
  
  
  METHODS
  The kinds and number of pests and their natural enemies were investigated at regular intervals and on the fixed trees.
  
  
  RESULTS
  There are 13 kinds of lycium pests and 17 kinds of natural enemies, the occurrence of which are closely related.
  
  
  CONCLUSIONS
  Natural enemies can control aphids and psyllidae effectively, but ten-spotted lema and Epithrix sp. must be controlled by pesticides.
authors.affiliation: Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100094, China. junzichen@263.net
authors.forename: Jun
authors.initials: J
authors.lastname: Chen
authors.forename: Hui-zhen
authors.initials: HZ
authors.lastname: Cheng
authors.forename: Wan-ong
authors.initials: WO
authors.lastname: Ding
authors.forename: Guo-zhen
authors.initials: GZ
authors.lastname: Zhang
authors.forename: Xiang-ge
authors.initials: XG
authors.lastname: Du
mesh_terms: D000818:Animals; D001042:Aphids; D001517:Coleoptera; D017753:Ecosystem; D006430:Hemiptera; D007915:Lepidoptera; D032305:Lycium; D010572:Pest Control, Biological; D010575:Pesticides; D012621:Seasons
chemical_list: D010575:Pesticides