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通过研究抗生素残留对土壤呼吸以及氨化的作用,以探讨抗生素对土壤微生物活性与功能的影响。结果表明,3种抗生素残留对土壤呼吸有不同程度的抑制作用,最大抑制率为15%,并且随着时间延长和浓度升高,呼吸抑制效果更加明显。抗生素残留对土壤氨化起抑制作用,土壤铵态氮含量呈先增加后降低再增加的趋势,处理3 d后土壤铵态氮含量最高,抑制率在90%~99%。由此可见,土壤抗生素残留对土壤微生物活性功能有很大影响,对土壤抗生素的生态毒理性研究很有必要。
By studying the effects of antibiotic residues on soil respiration and ammonification, the effects of antibiotics on soil microbial activity and function were investigated. The results showed that the three kinds of antibiotic residues had different degrees of inhibition on soil respiration, the maximum inhibition rate was 15%, and the respiratory inhibition effect became more obvious with the prolongation of time and concentration. The antibiotic residue had an inhibitory effect on soil ammonification. The content of ammonium nitrogen in soil increased firstly, then decreased then increased. The content of ammonium nitrogen in soil was the highest after 3 days of treatment, with the inhibition rate of 90% -99%. Thus, the soil antibiotic residues on soil microbial activity has a significant impact on the ecological antibiotic soil toxicology is necessary.