青菜对三种土壤中典型抗生素的累积规律研究

王莉莉; 孙浩; 汪浪浪; 李学德

文章摘要

王莉莉,孙浩,汪浪浪,李学德.青菜对三种土壤中典型抗生素的累积规律研究[J].农业环境科学学报,2022,41(9):1887-1896.

青菜对三种土壤中典型抗生素的累积规律研究

Accumulation regularity of typical antibiotics in Chinese cabbage from three soils

投稿时间：2022-03-04

DOI：10.11654/jaes.2022-0215

中文关键词: 土壤抗生素青菜累积规律机制分析

英文关键词: soil antibiotics Chinese cabbage accumulation regularity mechanism analysis

基金项目:安徽省重点研究与开发计划项目（202004a06020007）

作者	单位	E-mail
王莉莉	安徽农业大学资源与环境学院, 合肥 230036
孙浩	安徽农业大学资源与环境学院, 合肥 230036
汪浪浪	安徽农业大学资源与环境学院, 合肥 230036
李学德	安徽农业大学资源与环境学院, 合肥 230036 农业农村部合肥农业环境科学观测实验站, 合肥 230036	xuedel@ahau.edu.cn

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中文摘要:

为探究青菜对不同类型土壤中不同种类抗生素的吸收和累积特性，通过盆栽实验，观察了三类土壤（黄褐土、砂姜黑土、红壤）中磺胺二甲嘧啶（SM2）、磺胺甲噁唑（SMZ）、四环素（TC）、土霉素（OTC）4种典型抗生素在青菜中的累积规律。结果表明：青菜累积三类土壤中4种抗生素的含量均在第10天达到最高后逐渐下降；青菜中抗生素的含量随着土壤中抗生素初始含量（0.1~25.0 mg·kg^-1）的增大而增大，抗生素初始含量为25.0 mg·kg^-1时，青菜中累积的抗生素含量显著高于其他低浓度处理组（P<0.05）；土壤中抗生素初始含量为25.0 mg·kg^-1时，青菜从不同类型土壤中吸收同种抗生素的含量差异较大，排序为红壤（SM₂ 14 993.6μg·kg^-1、SMZ 12 199.2 μg·kg^-1、TC 646.1 μg·kg^-1、OTC 967.6 μg·kg^-1）>黄褐土（SM₂ 12 598.1 μg·kg^-1、SMZ 11 678.5 μg·kg^-1、TC463.5 μg·kg^-1、OTC 663.8 μg·kg^-1）>砂姜黑土（SM₂ 9 510.4 μg·kg^-1、SMZ 3 666.9 μg·kg^-1、TC 58.8 μg·kg^-1、OTC 90.5 μg·kg^-1），土壤pH和有机质含量是影响青菜从土壤中累积抗生素的重要因素；在同类土壤中，青菜对不同抗生素的累积顺序为SM₂>SMZ>OTC>TC，导致青菜对不同抗生素累积差异的原因，除了土壤对四环素类抗生素（TCs）的吸附能力强于磺胺类抗生素（SAs）外，还与不同抗生素的理化性质（分子结构、形态）有关。青菜能吸收土壤中的抗生素，在移栽后第10天青菜中抗生素的含量最高，青菜易从酸性土壤（红壤）中吸收抗生素，中性土壤（黄褐土）次之，碱性土壤（砂姜黑土）最低，且青菜对SAs的累积能力强于TCs，土壤中抗生素的初始含量越高，青菜中抗生素的含量也越高。

英文摘要:

To investigate the accumulation characteristics of different antibiotics in Chinese cabbage from different soils, the accumulation of typical antibiotics, including sulfadimidine(SM₂), sulfamethoxazole(SMZ), tetracycline(TC), and oxytetracycline(OTC), in Chinese cabbage were evaluated from three soils(yellow clunamon soil, lime concretion black soil, and red soil)through soil pot experiment. The results showed that the concentrations of the four antibiotics in Chinese cabbage from the three soils reached the highest concentrations on the 10^th day and then gradually decreased. The concentration of antibiotics in vegetables increased with increasing initial concentrations of antibiotics in soils. When the initial concentration of antibiotics in the soil was 25.0 mg·kg^-1, the concentration of antibiotics in Chinese cabbage was significantly higher than at lower initial concentrations. Under the same initial concentration of antibiotics in soil, the concentration of the antibiotics in Chinese cabbage varied greatly under different soil types. Soil pH and organic matter content were important factors affecting the antibiotic accumulation in Chinese cabbage. In the same soil, the accumulation sequence of different antibiotics in vegetable was in the order:SM₂ >SMZ>OTC>TC, which was because the adsorption of TCs in the same soil was much higher than that of SAs, and different antibiotics had different physical and chemical properties. Chinese cabbage absorbed antibiotics from soils and the concentration of antibiotics was the highest on the 10^th day after transplantation. The accumulation of antibiotics in Chinese cabbage was the highest in acidic soil(red soil), followed by neutral soil(yellow-cinnamon soil), and it was the lowest in alkaline soil(lime concretion black soil). The accumulation ability of Chinese cabbage to SAs was stronger than TCs, and the higher the initial concentration of antibiotics in soil, the higher the concentration of antibiotics in Chinese cabbage.

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