中文摘要：

兽用抗生素进入土壤，已经带来了新的土壤污染生态学问题，并己引起广泛关注。本文研究了不同浓度磺胺嘧啶残留对土壤氮矿化量及相关微生物参数的影响。结果表明，磺胺嘧啶对土壤氮矿化产生抑制作用，且抑制作用在低浓度比高浓度更为敏感。通过主成分分析和多元回归分析可知，在各相关微生物参数中，土壤微生物群落功能多样性可作为预测磺胺嘧啶残留时土壤氮矿化强度变化的指标。

英文摘要：

Veterinary antibiotics could bring new soil pollution and ecology problem when they enter into soil. This paper studied the effects of different concentrations of sulfadiazine residues on soil nitrogen mineralization and related microbiological parameters. The results showed that sulfadiazine inhibited soil nitrogen mineralization which was more sensitive in low initial sulfadiazine concentrations. The principal component analysis and multiple regression analysis proved that, among the relevant microbiological parameter, the functional diversity of soil microbial communities could be used as indicators to predict the effect of sulfadiazine residues on soil nitrogen mineralization.