施加盐基离子调控水稻Cd的吸收与累积

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期刊论文

论文标题(英文)：

Application of base cations to regulate Cd absorption and accumulation in rice

作者：

贾润语;李虹呈;王倩倩;辜娇峰;周航;...

通讯作者：

Zhou, H.

作者机构：

[贾润语; 李虹呈; 王倩倩; 杨文弢] College of Environment 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

[辜娇峰; 周航; 彭佩钦; 廖柏寒] College of Environment 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 Environment Science and Engineering, Central South University of Forestry and Technology, Changsha, China

语种：

中文

关键词：

盐基离子;水稻;Cd污染;土壤

关键词(英文)：

absorption;bioaccumulation;bioavailability;cadmium;cation;pollutant transport;rice;soil fertility;soil pollution

期刊：

环境科学学报

ISSN：

0253-2468

年：

2018

卷：

期：

页码：

4505-4511

DOI：

10.13671/j.hjkxxb.2018.0257

基金类别：

Supported by the National Key Research and Development Program of China (No.2016YFD0800705) and the Natural Science Foundation of Hunan Province (No.2018JJ3881).

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：

盐基离子含量是土壤肥力的重要指标,也是决定土壤Cd生物有效性的重要因素.为探明盐基离子对稻田系统中Cd迁移、转运与累积的影响,本研究通过水稻盆栽试验,按照土壤中盐基离子的物质的量比施加不同浓度梯度KCl、CaCl_2、NaCl和MgCl_2到模拟制备的轻度(0.5 mg·kg~(-1))和中度(1.5 mg·kg~(-1)) Cd污染土壤,分析盐基离子对土壤CaCl_2提取态Cd含量和水稻吸收累积Cd的影响.结果表明:施加盐基离子能够增加土壤阳离子交换量(CEC),在轻度和中度Cd污染土壤中,土壤CaCl_2提取态Cd含量分别下降了24.6% ~ 56.1%和17.0% ~ 71.1%,糙米Cd含量分别降低了9.1%~ 60.5%和7.2%~ 36.0%.在轻度和中度Cd污染土壤中,糙米...

摘要(英文)：

Content of soil base cation (BC) was one of the important factors affecting soil fertility and soil Cd bioavailability. To investigate the effects of BC on migration,transport,and accumulation of soil Cd in rice field system,a pot experiment was conducted with two simulated Cd-contaminated soils (L:0.5 mg•kg-1; M:1.5 mg•kg-1). Based on the mole ratios of different soil base cations, BC solutions were prepared using KCl, CaCl2, NaCl and MgCl2, and were added to the two simulated Cd-contaminated soils. Rice was then planted. The results indicat...

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