不同生育期淹水处理对水稻吸收积累砷、镉的影响
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- 英文论文题名：Effects of different water management modes on rice Cd and As absorption and accumulation
- 论文作者：李园星露 ; 叶长城 ; 刘玉玲 ; 彭欧 ; 韩欣笑 ; 铁柏清 ; 刘孝利
- 英文论文作者：LIYUAN xinglu ; YE Changcheng ; LIU yuling ; PENG Ou ; HAN-xinxiao ; TIE Boqing ; LIU Xiaoli ; College of Resources and Environment ; Hunan Agricultural University
- 年：2016
- 作者机构：湖南农业大学资源环境学院;
- 论文关键词：水稻 ; 淹水 ; 生育期 ; Cd积累量 ; As积累量
- 会议召开时间：2016-12-01
- 会议录名称：第六届重金属污染防治及风险评价研讨会暨重金属污染防治专业委员会2016年学术年会论文集
- 语种：中文
- 分类号：X53;X56
- 学会代码：HJKP
- 会议名称：第六届重金属污染防治及风险评价研讨会暨重金属污染防治专业委员会2016年学术年会
- 会议地点：中国福建厦门
- 主办单位：中国环境科学学会
- 学会名称：中国环境科学学会
- 页数：7
- 文件大小：1107k
- 原文格式：D
- 会议级别：全国
摘要
本文采用室外盆栽试验方法,研究重度Cd与轻度As复合污染土壤中水稻生育期不同水分管理(常规水分栽培CK、全生育期淹水栽培QY、孕穗期开始淹水栽培YY、灌浆期开始淹水栽培GY)对水稻不同器官Cd、As累积特征。结果表明,不同水分管理模式对抑制重金属Cd向糙米中迁移转化的能力依次为:QY>GY>YY>CK。不同水分管理模式对抑制重金属As向糙米中迁移转化的能力依次为:CK>GY=YY>QY。3种淹水模式,均能明显降低水稻对Cd的吸收累积,使水稻各器官对Cd的吸收和积累有所下降,且均不会显著增加籽粒中As的含量。在重度Cd与轻度As复合污染土壤中,全生育期淹水是最适宜的水分管理模式,其次是灌浆期淹水模式,均在大幅度降低重金属Cd的同时保持重金属As低于国家食品限量标准。
In this paper,through the outdoor rice pot experiment which include the conventional water cultivation CK,flooded cultivation in the whole stages QY,booting stage flooded cultivation YY, filling stage flooded cultivation GY, we studied the effect of the different stages of water management to the content of Cd and As for different organs of rice plant which grow in the soil with Severe Cd pollution,Mild As compound pollution.The results showed that the ability of the different water management models to control the transformation and transformation of heavy metals Cd into brown rice was:QY> GY> YY> CK. The ability of the different water management models to inhibit the transformation and transformation of heavy metal As to brown rice was: CK> GY = YY> QY. The three kinds of flooding models could significantly reduce the Cd uptake and accumulation of rice, so that the absorption and accumulation of cadmium in the organs of rice decreased, and the content of As in grain would not be increased significantly. Flooding in the whole growing period was the most suitable water management mode, followed by flooding in the grain filling stage, all of which reduced the heavy metal Cd while keeping the heavy metal As below the national food limit.
In this paper,through the outdoor rice pot experiment which include the conventional water cultivation CK,flooded cultivation in the whole stages QY,booting stage flooded cultivation YY, filling stage flooded cultivation GY, we studied the effect of the different stages of water management to the content of Cd and As for different organs of rice plant which grow in the soil with Severe Cd pollution,Mild As compound pollution.The results showed that the ability of the different water management models to control the transformation and transformation of heavy metals Cd into brown rice was:QY> GY> YY> CK. The ability of the different water management models to inhibit the transformation and transformation of heavy metal As to brown rice was: CK> GY = YY> QY. The three kinds of flooding models could significantly reduce the Cd uptake and accumulation of rice, so that the absorption and accumulation of cadmium in the organs of rice decreased, and the content of As in grain would not be increased significantly. Flooding in the whole growing period was the most suitable water management mode, followed by flooding in the grain filling stage, all of which reduced the heavy metal Cd while keeping the heavy metal As below the national food limit.
引文
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[2]谭文兵.耕地重金属污染的防治[J].中国土地,2014(7):35-36
[3]环境保护部,国土资源部.全国土壤污染状况调查公报[J].中国环保产业,2014(5):10-11
[4]孙永红.镉砷在水稻体内的积累及其调控[D].南京农业大学,2008.
[5]李彦奇,关东明,陈陆霞,等.Phytoremediation Technology of Cadmium Pollution[J].Bioprocess,2014,04(04):61-66.
[6]陈同斌,刘更另.砷对水稻生长发育的影响及其原因[J].中国农业科学,1993(6):50-58
[7]叶长城,陈喆,毛懿德,等.生物菌肥与石灰配施对水稻吸收积累Cd的影响[J].环境污染与防治,2015,37(6):49-54
[8]纪雄辉,梁永超,鲁艳红,等.污染稻田水分管理对水稻吸收积累镉的影响及其作用机理[J].生态学报,2007,27(9):3930-3939
[9]钟倩云,曾敏,廖柏寒,等.碳酸钙对水稻吸收重金属(Pb、Cd、Zn)和As的影响[J].生态学报,2015,35(4):1242-1248.
[10]陈喆,铁柏清,雷鸣,等.施硅方式对稻米镉阻隔潜力研究[J].环境科学,2014,35(7):2762-2770.
[11]Wu Yanyu,Chen Tao,Kong Qingxin,等.POLLUTION ECOLOGY OF Cd IN THE ZHANGSHI IRRIGATION AREA OF SHENYANG沈阳张士灌区镉污染生态的研究[J].环境科学学报,1984(3).
[12]Zhang L-N,Zong L-G,Fu S-J,et al.Effects of water control on rice growth and its intake of cadmium on Cd contaminated soil.Journal of Safety and Environment(安全与环境学报),2006,6(5):49-52(in Chinese)
[13]龙水波,曾敏,周航,等.不同水分管理模式对水稻吸收土壤砷的影响[J].环境科学学报,2014,34(4):1003-1008
[14]曾翔,李阳生,谢小立,等.2003.不同灌溉模式对杂交水稻生育后期根系生理特性和剑叶光合特性的影响[J].中国水稻科学,17(4):66-70
[15]陈丽娜.不同水分管理模式下砷在土壤—水稻体系中的时空动态规律研究[D].河北农业大学,2009
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