再生水灌溉不同滴头布置方式下PPCPs在土壤和番茄中的累积  

Impacts of different emitter layouts on the accumulation of Pharmaceuticals And Personal Care Products(PPCPs)in soil and tomato under reclaimed water irrigation

作　　者：李松旌 樊向阳[1,3,4] 崔二苹 胡超[1,3,4] 崔丙健 刘源[1,3,4] 李中阳[1,3,4] 景若瑶[2] 李胜曙 Li Songjing;Fan Xiangyang;Cui Erping;Hu Chao;Cui Bingjian;Liu Yuan;Li Zhongyang;Jing Ruoyao;Li Shengshu(Farmland Irrigation Research Institute,Chinese Academy of Agricultural Sciences,Xinxiang 453002,China;Graduate School of Chinese Academy of Agricultural Sciences,Beijing 100081,China;Key Laboratory of High-efficient and Safe Utilization of Agriculture Water Resources,Chinese Academy of Agricultural Sciences,Xinxiang 453002,China;Agricultural Water Soil Environmental Field Research Station of Xinxiang,Chinese Academy of Agricultural Sciences,Xinxiang 453002,China)

机构地区：[1]中国农业科学院农田灌溉研究所,新乡453002 [2]中国农业科学院研究生院,北京100081 [3]中国农业科学院农业水资源高效安全利用重点开放实验室,新乡453002 [4]中国农业科学院新乡农业水土环境野外科学观测试验站,新乡453002

出　　处：《农业工程学报》2021年第8期187-194,共8页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家自然科学基金项目(51479201);中央级公益性科研院所基本科研业务费专项(FIRI202003-01);河南省科技攻关项目(192102110094)。

摘　　要：随着药品和个人护理品(Pharmaceuticals and Personal Care Products,PPCPs)生产和使用量的增加,PPCPs及其代谢产物在再生水中的检出种类、检出量不断增多,再生水灌溉可影响PPCPs在土壤-作物(蔬菜)系统中的分布及累积,但其规律及驱动机制尚不明确。为探明再生水滴灌条件下滴头布置方式对PPCPs在土壤-作物(蔬菜)系统累积的影响,该研究采用盆栽试验比较2种滴头布置方式(在番茄根部、在两番茄中间)对土壤剖面及番茄各器官中PPCPs累积量的影响,并进一步分析PPCPs在土壤-作物(蔬菜)系统累积的驱动机制。结果表明,再生水灌溉条件下不同滴头布置方式造成了PPCPs在土壤、作物(蔬菜)中累积规律的差异性,滴头布置在两番茄中间处理较其他处理而言增加了0~5cm土层吉非罗齐累积量(P<0.05),降低了番茄叶部卡马西平和根部吉非罗齐的累积量(P<0.05),较滴头布置在番茄根部处理降低了番茄叶部吉非罗齐和根部三氯生的累积量(P<0.05);不同再生水灌溉方式通过影响土壤微环境指标导致了土壤中PPCPs分布规律的差异性,滴头布置在植株中间处理较其他处理增加了0~5 cm土层pH值,导致该土层下吉非罗齐的累积量高于其他处理(P<0.05)。研究可为基于新兴污染物PPCPs防控的再生水农业安全利用提供理论依据。Pharmaceuticals and Personal Care Products(PPCPs)have emerged in recent years as prevalent environmental pollutants subjected to the ever-growing global population and occurrence of new diseases.PPCPs can easily enter the soil-plant system via reclaimed wastewater irrigation and sludge application in modern agriculture.A multitude of biotic and abiotic processes directly determine the PPCPs metabolism in soil.However,the effects of soil moisture on PPCPs accumulation still remain unclear.In this study,a new irrigation arrangement was proposed to facilitate the PPCPs degradation while retard the root uptake during translocation in plants.Three typical PPCPs were taken as research materials,including carbamazepine(CBZ),gemfibrozil(GEM),and triclosan(TCS),under different dripper arrangements(at the root of tomato and between two tomatoes),with conventional border irrigation(CK)as the control.Subsequently,the soil at different depths was selected to measure the PPCPs contents of plant tissues,physicochemical properties,and microflora.The results showed that there was no significant difference in the cumulative amounts of CBZ and TCS in the 0-5,>5-10,and>10-15 cm soil layers under each treatment.The cumulative amount of GEM under CK and the treatment of emitters placed at root(DR)were lower than the treatment of emitters placed between two plants(DM)(P<0.05).The cumulative amount of CBZ in leaves under DM reduced by 38.90%and 32.23%compared with CK and DR respectively(P<0.05).In terms of the cumulative amount of GEM in tomato roots,DM decreased by 49.07%and 55.61%compared with CK and DR treatment separately,the cumulative amount of GEM in leaves under DM treatment was reduced by 53.40%compared with DR(P<0.05).The cumulative amount of TCS in roots under DM was 32.17%lower than that under CK(P<0.05).The correlation analysis indicated that the distribution of CBZ in the soil was positively correlated with Proteobacteria,Nitrospirae,and Elusimicrobia(P<0.05),whereas negatively correlated with Actinobacteria(P<0.05).GEM wa

关 键 词：土壤 蔬菜 药品 个人护理品 滴灌 再生水 行为特征 

分 类 号：S19[农业科学—农业基础科学] S274