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农学学报 ›› 2016, Vol. 6 ›› Issue (1): 42-46.doi: 10.11923/j.issn.2095-4050.cjas15040009

所属专题: 园艺

• 土壤肥料 资源环境 生态 • 上一篇    下一篇

生物质炭降低蔬菜吸收土壤中抗生素的作用

章明奎,顾国平,徐秋桐   

  1. 浙江大学 环境与资源学院,绍兴市农业科学研究院,浙江大学 环境与资源学院
  • 收稿日期:2015-04-13 修回日期:2015-06-02 接受日期:2015-06-15 出版日期:2016-01-29 发布日期:2016-01-29
  • 通讯作者: 章明奎 E-mail:mkzhang
  • 基金资助:
    国家自然科学基金项目“兽用抗生素在农田土壤中的活性及其在蔬菜中的积累特征与生理效应”(21177108)。

Effect of Biochar Application on the Reduction of Antibiotics Uptake by Vegetable Crop

  • Received:2015-04-13 Revised:2015-06-02 Accepted:2015-06-15 Online:2016-01-29 Published:2016-01-29

摘要: 采用土培方法研究了施用不同量生物质炭(0.75%、1.5%和2.0%)对初始污染浓度各为25 mg/kg的土霉素、恩诺沙星、磺酸二甲嘧啶、泰乐菌素等4种抗生素污染土壤中有效态抗生素含量和蔬菜对土壤中抗生素吸收及蔬菜生长的影响。结果表明,施用生物质炭可减缓土壤中抗生素的降解,但明显降低了土壤中有效态抗生素含量。在培养52 d的土壤中,生物质炭用量为1.5%和2.0%的2个处理的有效态土霉素、恩诺沙星、磺酸二甲嘧啶和泰乐菌素的含量分别比对照下降25.29%与39.09%,16.39%与28.69%,16.97%与23.64%和17.76%与25.70%。施用生物质炭也可减少蔬菜对土壤抗生素的吸收,施用1.5%和2.0%生物质炭后,蔬菜中土霉素、恩诺沙星、磺酸二甲嘧啶和泰乐菌素含量分别比未施生物质炭的对照处理低23.11%与35.93%,15.89%与22.85%,7.64%与16.56%和16.79%与29.50%。与对照土壤比较,施用生物质炭可增加蔬菜的生物量。

关键词: 光碳核肥, 光碳核肥, 谷子, 光合特性, 生理生化性能, 产量性状

Abstract: A soil culture experiment was carried out to study the effects of different biochar application rates of 0.75%, 1.5% and 2.0% on the content of effective antibiotics in soil, the uptake amount of antibiotics by vegetables and the growth of vegetable. The soil was treated with 4 antibiotics (oxytetracycline, enrofloxacin, sulfamethazine, and tylosin) with the concentration of 25 mg/kg. The results showed that the application of biochar could slow down the degradation of antibiotics, but it significantly decreased the concentration of available antibiotics in soil. After 52 days incubation, the application of 1.5% and 2.0% biochar decreased the concentrations of soil available antibiotics by 25.29% and 39.09% for oxytetracycline, 16.39% and 28.69% for enrofloxacin, 16.97% and 23.64% for sulfamethazine and 17.76% and 25.70% for tylosin, respectively. The application of biochar could also reduce the uptake amount of antibiotics by vegetable plants. After the application of 1.5% and 2.0% biochar, antibiotics content in vegetable reduced by 23.11% and 35.93% for oxytetracycline, 15.89% and 22.85% for enrofloxacin, 7.64% and 16.56% for sulfamethazine and 16.79% and 29.50% for tylosin, respectively. The application of biochar could increase the biomass of vegetable plants compared to CK.

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