兽药磺胺间甲氧嘧啶对土壤呼吸及酶活性的影响.pdfVIP

农业环境科学学报 2010,29(2):314-318 Journal of Agro-Environment Science 兽药磺胺间甲氧嘧啶对土壤呼吸及酶活性的影响 金彩霞，刘军军，陈秋颖，樊 静，周庆祥，潘 峰 , , （河南师范大学化学与环境科学学院河南省环境污染控制重点实验室 黄淮水环境与污染防治省部共建教育部重点实验室 河南 新乡453007） 摘 要：为评价兽药污染对土壤生态环境造成的潜在环境风险，采用室内培养的方法，研究了兽药抗生素磺胺间甲氧嘧啶对黄潮 土土壤微生物呼吸及土壤酶活性的影响。结果表明，磺胺间甲氧嘧啶可显著影响土壤呼吸强度，抑制率和激活率分别可达72%和 254% ，药物对土壤酶活性的影响小于其对土壤呼吸强度的影响。在添加磺胺间甲氧嘧啶的前 11 d，其对脲酶活性的影响主要以抑 制作用为主；药物对蔗糖酶活性的影响较为明显，最大抑制和激活率可分别达到18%和30% ；磺胺间甲氧嘧啶作用于过氧化氢酶 和磷酸酶主要表现为激活效应，最大激活率分别为 17%和25% 。在试验浓度范围内，土壤微生物呼吸及酶活性的抑制率或激活率 呈现一定的波动性。 关键词：磺胺间甲氧嘧啶；土壤呼吸；酶活性；抑制；激活 中图分类号 X592 文献标志码 A 文章编号 1672- 2043(2010)02- 0314- 05 ： ： ： Effects of Sulfamonomethoxine on Soil Respiration and Enzyme Activity JIN Cai-xia, LIU Jun-jun, CHEN Qiu-ying, FAN Jing, ZHOU Qing-xiang, PAN Feng College of Chemistry and Environmental Science, Henan Normal University, Henan Key Laboratory of Environmental Pollution Control, Key （ Laboratory for Yellow River and Huaihe River Water Environmental and Pollution Control Minisitry of Education, Xinxiang 453007, China） Abstract The animal excrements containing veterinary drugs manured into field soils would result in agricultural soil pollution, and which ： drew an important potential threat on the human health and ecosystem. The effects of sulfamonomethoxine on soil respiration and enzyme ac－ tivity were studied in the yellow moist soil by indoor cultivating to evaluate the potential toxicological effects of veterinary drugs. The results showed that soil respiration was influenced obviously under the stress of sulfamonomethoxine, the inhibition rate and activation rate reached 72% and 254%, respectively. The effect on enzyme activity by sulfamonomethoxine was much less than the soil respiration, which demonstrat－ ed the fact that soil respiration was much more sensitive under the stress of the drug. Sulfamo