添加腐殖质对作物吸收土壤中OTC和SMX的影响  

Effects of Humus Addition on Absorption of OTC and SMX by Plants in Soil

作　　者：李刚 田甜 王帆 单欣欣 李梦蛟 LI Gang;TIAN Tian;WANG Fan;SHAN Xinxin;LI Mengjiao(Xinjiang Center of Solid Waste Management,Urumqi Xinjiang 830011,China;Changji Centerof Disease Control and Prevention,Changji Xinjiang 831100,China)

机构地区：[1]新疆维吾尔自治区固体废物管理中心,新疆乌鲁木齐830011 [2]昌吉回族自治州疾病预防控制中心,新疆昌吉831100

出　　处：《新疆环境保护》2024年第4期1-7,共7页XINJIANG ENVIRONMENTAL PROTECTION

摘　　要：抗生素滥用导致土壤环境中残存着大量的抗生素化合物,进而影响作物的食用安全性。用腐殖质作为土壤改良剂,上海青(Brassica chinensis L.)和小麦(Triticum aestivum L.)为试验植物,以植物吸收抗生素的量为评价指标,通过盆栽试验探究添加腐殖质对土壤中两种抗生素生物有效性的影响。结果表明:与未添加改良剂的对照试验相比,添加1%腐殖质且种植上海青和小麦1周后,土壤中磺胺甲噁唑(SMX)的生物有效性分别降低了16.09%和55.00%,土霉素(OTC)的生物有效性分别降低了63.64%和6.17%。同时,上海青中SMX和OTC含量分别下降了90.05%和48.28%,小麦中SMX和OTC含量分别下降了57.72%和66.22%。可见,合适的腐殖质添加量能够通过影响土壤中抗生素的生物有效性而显著降低其生态与健康风险。The abuse of antibiotics leads to a large amount of residual antibiotic in the soil environment,which in turn affects the food safety of crops.In this study,humus was used as a soil amendment,Shanghai green(Brassica chinensis L.)and wheat(Triticum aestivum L.)were used as experimental plants,and the amount of antibiotics absorbed by plant was used as an evaluation index to explore the effect of humus addition on the bioavailability of two antibiotics in soil through pot experiment.The results showed that compared with the control experiment,adding 1%humus and planting Shanghai green and wheat for one week reduced the bioavailability of sulfamethoxazole(SMX)in soil by 16.09%and 55.00%,respectively,and the bioavailability of oxytetracycline(OTC)by 63.64%and 6.17%,respectively.At the same time,the contents of SMX and OTC in Shanghai green decreased by 90.05%and 48.28%,respectively,and the contents of SMX and OTC in wheat decreased by 57.72%and 66.22%,respectively.It can be seen that appropriate amount of humus addition can significantly reduce the ecological and health risks of antibiotics by affecting the bioavailability of antibiotics in soil.

关 键 词：腐殖质 抗生素 生物有效性 植物富集能力 

分 类 号：X53[环境科学与工程—环境工程]