空心菜对戊唑醇的吸收与富集特征  

Uptake and accumulation of tebuconazole in water spinach(Ipomoea aquatica Forsk.)

作　　者：柯娟娟 许甜甜 马鑫[1] 唐俊[1] 吴祥为[1] 花日茂[1] 史陶中[1] KE Juanjuan;XU Tiantian;MA Xin;TANG Jun;WU Xiangwei;HUA Rimao;SHI Taozhong(Anhui provincial Key Laboratory of Hazardous Factors and Risk Control of Agri-food Quality Safety,School of Resource&Environment,Anhui Agricultural University,Hefei 230036)

机构地区：[1]农产品质量安全危害因子与风险控制安徽省重点实验室,安徽农业大学资源与环境学院,合肥230036

出　　处：《安徽农业大学学报》2024年第5期851-856,共6页Journal of Anhui Agricultural University

基　　金：安徽农业大学人才基金(RC522015)资助。

摘　　要：为了研究空心菜对戊唑醇吸收与富集作用,通过水培试验分析空心菜对水中三唑类杀菌剂戊唑醇去除效率以及戊唑醇在空心菜体内的富集与转运特征,评价其对戊唑醇污染环境的植物修复能力。结果表明:戊唑醇在空心菜种植的培养液中的消解速率明显快于无空心菜种植的培养液。在3个不同初始处理浓度(1、10、100μg·L^(–1))戊唑醇培养液中,处理10 d后空白对照组去除率几乎为0%,而空心菜处理组的去除率均大于85%,3个浓度处理组戊唑醇的消解半衰期分别为3.47、2.46和2.49 d。空心菜根和茎叶部位的富集行为具有较大差异,其生物富集量和生物富集系数均为根部>茎叶部,且茎叶部分的转运系数均小于1,表明戊唑醇很难在空心菜植株中向上迁移,易被根部富集,可见空心菜具有较好的修复戊唑醇污染水体的潜力。研究结果可为戊唑醇环境污染植物修复以及农业生产中合理用药提供数据支撑。To investigate the absorption and enrichment effects of water spinach on tebuconazole,a hydroponics experiment was carried out to analyze the uptake and removal efficiency of tebuconazole from water by water spinach and to evaluate its potential for phytoremediation of tebuconazole-contaminated environments.The results showed that the dissipation rate of tebuconazole in the culture medium of water spinach was significantly faster than that in the culture medium without water spinach.In three different initial treatment concentrations(1,10,100μg·L^(–1)),the removal rate of the blank control group was almost 0%after 10 days of treatment,while the removal rate of the water spinach treatment group was more than 85%.The dissipation half-life of the three concentration treatment groups was 3.47,2.46 and 2.49 d,respectively.The enrichment behavior of tebuconazole in the roots and stem-leaves of water spinach showed significant differences,with both the bioconcentration and bioaccumulation factors being higher in the roots than in the stem-leaves.The translocation factors in the stem-leaves were all less than 1,indicating that tebuconazole is difficult to translocate upwards within the water spinach plant and is more readily enriched in the roots.This suggests that water spinach has considerable potential for remediating water bodies contaminated with tebuconazole.The study provides data support for the phytoremediation of tebuconazole environmental pollution and the rational use of pesticides in agricultural production.

关 键 词：空心菜 戊唑醇 吸收 富集 转移 

分 类 号：S436.418[农业科学—农业昆虫与害虫防治] S482.2[农业科学—植物保护]