Effects of Caenorhabditis elegans on Bacillus subtilis number and activity and soil nitrogen mineralization under different soil moisture conditions
不同土壤水分条件下华美新小杆线虫对枯草芽孢杆菌数量、活性及土壤氮素矿化的影响

The study with gnotobiotic microcosm showed within the range of test soil moisture contents, the feeding activity of Caenorhabditis elegans on Bacillus subtilis promoted the latter' s proliferation, and enhanced soil respiration significantly. The increment of B. subtilis number varied with soil moisture content, and decreased in the order of 23% > 17% > 28% . The interaction of C. elegans and B. subtilis increased the contents of soil mineral N and NH4 + -N significantly, indicating that soil nitrogen mineralization was markedly promoted. A higher nitrogen mineralization rate was observed under 23% soil moisture content.