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Chinese Journal of Applied Ecology ›› 2003, Vol. ›› Issue (6): 1026-1028.

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Functional predation response of three main species to cotton bollworm in Xinjiang cotton-planting area

FENG Hongbing1, XU Jing1, ZHANG Qingwen1, WANG Fei2, SONG Rong2   

  1. 1. Plant Protection Institute of China Agricultural University, Beijing 100094, China;
    2. Plant Protection Institute of Xinjiang Academy of Agricultural Science, Urumqi 830000, China
  • Received:2001-04-10 Revised:2001-06-25 Online:2003-06-15

Abstract: Field insect population survey indicated that the principal natural predation enemies of cotton bollworm (Helicoverpa armigera Hubner) were Eringonidium graminicola Sundevall, Adonia variegata Goeze, Nabis sinoferus Hsiao.The results from experiments showed that the amount of prey consumed of these principal natural enemies increased when the density of prey rised,and decreased when the density of natural enemies increased. The predation function response fitted Holling's predation response equationⅡ,and could be fit with the Disk Equatio

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