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螯合剂GLDA对象草修复镉污染农田的影响

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成果类型:
期刊论文
论文标题(英文):
Effects of Chelate GLDA on the Remediation of Cadmium Contaminated Farmland by Pennisetum purpureum Schum
作者:
覃建军;唐盛爽;蒋凯;黄敬;侯红波;...
通讯作者:
Long, Jian(longjiancsuft@yeah.net);Peng, Pei-Qin(pqpeng123@sina.com)
作者机构:
[Qin J.-J.; 唐盛爽; 蒋凯; 黄敬] College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China
Hunan Engineering Laboratory for Control of Rice Quality and Safety, Changsha, 410004, China
[侯红波; 龙坚; 彭佩钦] College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China<&wdkj&>Hunan Engineering Laboratory for Control of Rice Quality and Safety, Changsha, 410004, China
通讯机构:
College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, China
语种:
中文
关键词:
谷氨酸二乙酸四钠(GLDA);象草;修复;镉;农田
关键词(英文):
Biomass;Cadmium;Chelation;Farms;Organic carbon;Soils;Application method;Cadmiums (Cd);Dissolved organic carbon;Mass concentration;Pennisetum purpureum;Positive correlations;Time interval;Total dose;Pollution;cadmium;glutamic acid;agricultural land;bioremediation;Pennisetum;soil;soil pollutant;Biodegradation, Environmental;Cadmium;Farms;Glutamic Acid;Pennisetum;Soil;Soil Pollutants
期刊:
环境科学
ISSN:
0250-3301
年:
2020
卷:
41
期:
8
页码:
3862-3869
基金类别:
国家科技支撑计划项目(2015BAD05B02); 农业部财政部重大专项(农办财函[2016]6号);
机构署名:
本校为第一且通讯机构
院系归属:
环境科学与工程学院
摘要:
为探明螯合剂谷氨酸二乙酸四钠(GLDA)对象草修复镉(Cd)污染农田的影响,通过田间小区试验,于60d内以不同方式(总施加量585、1170和2340kg·hm~(-2)分别等分为1~4次施加,分2~4次施加的时间间隔分别为30、20和15d)向已种植60d象草的Cd污染农田(总Cd:0.62mg·kg~(-1))施加GLDA,分析了象草地上部生物量、Cd含量和Cd提取量以及土壤pH和可溶性有机碳(DOC)质量浓度等指标.结果表明,少量且分多次施加GLDA能显著提高象草地上部生物量和Cd含量,其中分施次数和总施加量分别是生物量和Cd含量的关键影响因子;Cd提取量在总施加量585kg·hm~(-2)分4次施加时最高,为16.78g·hm~(-2),较CK(不施加GLDA)显著提高275....
摘要(英文):
In order to clarify the effects of chelate tetrasodium glutamate diacetate (GLDA) on the remediation of cadmium (Cd) contaminated farmland by Pennisetum purpureum Schum, GLDA was applied in different methods within 60 days: total application doses of 585, 1 170, and 2 340 kg•hm-2 were equally divided into 1-4 applications, respectively, and the time intervals of 2-4 applications were 30, 20, and 15 days, respectively. The biomass, Cd content, and amount of Cd extracted from aboveground parts of Pennisetum purpureum Schum, in addition to the pH...

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