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中国土壤模式-作物系统重金属生物富集模型建立
引用本文:郑宏艳,姚秀荣,侯彦林,刘书田,米长虹,黄治平,王农,蔡彦明.中国土壤模式-作物系统重金属生物富集模型建立[J].农业环境科学学报,2015,34(2):257-265.
作者姓名:郑宏艳  姚秀荣  侯彦林  刘书田  米长虹  黄治平  王农  蔡彦明
作者单位:农业部环境保护科研监测所, 天津 300191,农业部环境保护科研监测所, 天津 300191,农业部环境保护科研监测所, 天津 300191,农业部环境保护科研监测所, 天津 300191,农业部环境保护科研监测所, 天津 300191,农业部环境保护科研监测所, 天津 300191,农业部环境保护科研监测所, 天津 300191,农业部环境保护科研监测所, 天津 300191
基金项目:中国农业科学院科技创新工程(2014-cxgc-hyl)
摘    要:针对土壤模式建立土壤和作物重金属含量关系模型,旨在消除土壤属性对作物重金属吸收量的影响。当作物类型或品种确定后,作物重金属吸收量只与土壤重金属含量有关。提出了农田作物重金属生物富集的"土壤重金属含量-作物特性-土壤属性"关系理论,定义了土壤模式、土壤模式-作物系统重金属生物富集模型、土壤模式-作物系统重金属生物富集模型图谱等概念,确定了土壤模式的划分方法和使用方法,在此基础上以最近30年来中文期刊发表的土壤镉含量与水稻和小麦镉含量关系作为案例验证了以上方法。结果表明:水稻和小麦同一部位镉吸收量随土壤镉含量增加而增加,水稻和小麦吸收镉能力顺序为根>茎>叶>籽粒,水稻和小麦籽粒镉吸收量在同一范围内。

关 键 词:重金属生物富集模型  土壤模式-作物系统  中国
收稿时间:2014/9/17 0:00:00

Establishment of Heavy Metal Bioaccumulation Model of Soil Pattern-Crop System in China
ZHENG Hong-yan,YAO Xiu-rong,HOU Yan-lin,LIU Shu-tian,MI Chang-hong,HUANG Zhi-ping,WANG Nong and CAI Yan-ming.Establishment of Heavy Metal Bioaccumulation Model of Soil Pattern-Crop System in China[J].Journal of Agro-Environment Science( J. Agro-Environ. Sci.),2015,34(2):257-265.
Authors:ZHENG Hong-yan  YAO Xiu-rong  HOU Yan-lin  LIU Shu-tian  MI Chang-hong  HUANG Zhi-ping  WANG Nong and CAI Yan-ming
Affiliation:Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China,Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China,Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China,Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China,Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China,Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China,Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China and Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China
Abstract:A relational model of the content of heavy metals between soil and crop in farm system was established based on the different soil patterns to eliminate the effect of soil properties on heavy metal absorption by crop from soils. Thus heavy metals absorption by crops was only related to the contents of heavy metals in soil patterns when crop type or variety was confined. A theory was put forward about bioaccumulation of heavy metals dependent on the relations among heavy metal contents in soil, crop characteristics and soil properties. The concepts of soil pattern, soil pattern - crop system heavy metal bioaccumulation model and its atlas were also defined. Methods for classifying and utilizing soil patterns were established and verified based on the Chinese articles published in the last 30 years dealing with the relationships between Cd contents in farm soils and in rice and wheat plants. The results showed that the Cd absorption quantity in the same plant organ was increasing with Cd content in soil, with Cd absorption ability of root > stem > leaf > grain. The Cd content of rice grains and wheat grains was within the same range.
Keywords:heavy metal  bioaccumulation model  soil pattern-crop system  China
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