再生水滴灌土壤中重金属Cd分布运移实验研究  

Research on the Migration of Heavy Metals Cd in Soil under the Drip Irrigation with Reclaimed Water

作　　者：裴亮[1,2] 廖晓勇[2,3] 孙莉英[1] 颜明[1] PEI Liang1,2, LIAO Xiao-yong2,3, SUN Li-ying1, YAN Ming1(1. Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; 2. Beijing Key Laboratory of Environmental Damage Assessment and Remediation, Beijing 100101, China; 3. Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, Chin)

机构地区：[1]中国科学院地理科学与资源研究所陆地水循环及地表过程重点实验室,北京100101 [2]中国科学院地理科学与资源研究所环境损害与污染修复北京市重点实验室,北京100101 [3]中国科学院陆地表层格局与模拟重点实验室,北京100101

出　　处：《中国农村水利水电》2018年第5期74-77,共4页China Rural Water and Hydropower

基　　金：国家重点研发计划项目(2017YFD0800900);国家自然科学基金项目(51109197);国家科技支撑计划课题项目(2012BAD08B02;2013BAC02B02)

摘　　要：对生育期内大棚蔬菜进行再生水滴灌试验,与地下水滴灌为对照,分析研究了再生水滴灌后8 d内土壤不同深度中重金属Cd积累分布和运移情况。结果表明:滴灌后第2 d,表层土壤Cd浓度最大,滴灌后第4 d 100 cm深度处Cd浓度最大,表层土壤Cd浓度略有降低,第6~8 d,各层土壤Cd浓度接近,0~40和80~120 cm处浓度最大,深度低于120 cm时Cd浓度随深度增加降低。适当浓度再生水滴灌情况下,土壤深层Cd浓度符合GB15618-1995标准限值,适当浓度的再生水滴灌不会造成Cd污染。Reclaimed water drip irrigation experiments were conducted during the growth of greenhouse vegetables,and underground water irrigation as the control,analysis of reclaimed water drip irrigation soil after 8 days of heavy metals in different depth of Cd accumulation and distribution and migration. The results showed that second days after irrigation,soil Cd concentration,drip irrigation after fourth days at the depth of 100 cm Cd the largest concentration of surface soil Cd concentration was slightly reduced,sixth to eighth days,each layer of soil Cd concentration close to 0 - 40 and 80 - 120 cm,the largest concentration of more than 120 cm Cd concentration increased as depth decreased.The proper concentration of reclaimed water drip irrigation condition,soil deep layer Cd concentration in line with GB15618-1995 standard limits,the proper concentration of reclaimed wastewater irrigation will not cause pollution of Cd.

关 键 词：再生水滴灌 镉 土壤 蔬菜生育期 

分 类 号：TV93[水利工程—水利水电工程] X703.1[环境科学与工程—环境工程]