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cje ›› 1995, Vol. ›› Issue (3): 10-14.

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Relationship Between seasonal Quantitative Variation of Soil Animals in Wheat Field and Environmental Factors in Northeast Heavy Frigid Region of China

Su Yongchun , Zhang Chongbang, Gou Yingbo   

  1. Biology Department of Keshan Normal College, Heilongjiang Province 161601
  • Received:1994-08-15 Online:1995-06-10

Abstract: This study was made from April to September,1993.4492 specimen of soil animals were collect-ed,which belong to 3 families,5 genera and 13 species. Among them,Acarina,Collembola andNemetoda are dominant.The relationship between seasonal quantitative variation of soil animalsand 9 environmental factors are studied,and primary and secondary factors influencing this varia-tion are sought out through grey connected analysis.

Key words: methyl salicylate, wheat-oilseed rape intercropping, Sitobion avenae, natural enemy, temporal dynamics, biological control index (BCI).