Abstract:Researches on the interaction between nematodes and microbes were usually carried out in gnotobiotic microcosm, in order to know the interaction in open soil system, we inoculated bacterivorous nematode (Protorhabditis sp) into the open soil system with and without wheat to study the effects of bacterivorous nematodes and their interactions with roots on soil microbial biomass and microriocoenosis at different growth stages of wheat. The results indicated that, the inoculation of bacterivorous nematodes inc...