Mao Xiaofang, Li Huixin, Long Mei, Hu Feng
College of Resources and Environmental Sciences, Nanjing Agricultural University, China.
Ying Yong Sheng Tai Xue Bao. 2005 Jun;16(6):1112-6.
A gnotobiotic microcosm experiment was conducted to study the interactions between bacteria-feeding nematode Caenorhabditis elegans and bacterium Bacillus subtilis, and their effects on soil nitrogen mineralization at different Caenorhabditis elegans density. The results showed that the inoculation of the nematode stimulated the growth of the bacterium, and the increment was in order of 20>10>40 nematodes x g(-1) dried soil. The interaction between Caenorhabditis elegans and Bacillus subtilis significantly enhanced soil respiration rate and soil invertase, urease and phosphatase activities, with no significant differences among three test nematode densities. The inoculation of bacterial-feeding nematode markedly increased soil NH4+ -N and mineral N, suggesting that soil N mineralization was enhanced under the effect of the nematode. The increment of soil nitrogen mineralization at different nematode density was also in the same order mentioned above.
进行了一项无菌微宇宙实验，以研究以细菌为食的线虫秀丽隐杆线虫与枯草芽孢杆菌之间的相互作用，以及它们在不同秀丽隐杆线虫密度下对土壤氮矿化的影响。结果表明，接种线虫刺激了细菌的生长，增量顺序为20>10>40条线虫x g(-1)干土。秀丽隐杆线虫与枯草芽孢杆菌之间的相互作用显著提高了土壤呼吸速率以及土壤蔗糖酶、脲酶和磷酸酶活性，三种测试线虫密度之间无显著差异。接种以细菌为食的线虫显著增加了土壤铵态氮和矿质氮，表明在线虫的作用下土壤氮矿化增强。不同线虫密度下土壤氮矿化的增量也呈上述相同顺序。
