两种低镉积累水稻镉含量与土壤镉的剂量-效应关系及调控

doi:10.11934/j.issn.1673-4831.2017.08.011

摘要/Abstract

摘要：

为探明低镉积累水稻（Oryza sativa L.）嘉33和秀水128在保障湖南湘阴地区镉污染农田生产功能上的应用潜力，通过田间试验研究其对土壤镉的含量效应以及精米安全输出的土壤镉污染临界值，同时探究土壤pH值和有机质含量对精米镉积累的影响。结果表明：这2种水稻精米中镉积累量与土壤有效态镉含量呈极显著正相关关系，R²分别为0.982和0.978；基于GB 2715-2012《国家粮食和食品安全标准》，嘉33和秀水128精米可安全输出的土壤有效态镉临界值分别为0.307和0.293 mg·kg^-1。通过施用石灰和有机肥提高土壤pH值和有机质含量均可降低土壤有效态镉含量，减少土壤镉向水稻植株的迁移及其在水稻精米中的积累；精米镉积累量与土壤pH值和土壤有机质含量存在显著或极显著负相关关系。

关键词: 水稻, 镉, 剂量-效应, 调控

Abstract:

In order to assess production potential of two low Cd accumulating varieties (Oryza sativa L. Jia-33 and Xiushui-128) of rice in Cd contaminated paddy fields in Xiangyin of Hunan, a field experiment was conducted to explore relationship of Cd content in rice with soil Cd concentration, threshold of soil Cd concentration for safety production of polished rice, and impacts of soil pH and soil organic matter content on Cd concentration in polished rice. Results show that Cd concentrations in polished rice of both cultivars (Jia-33 and Xiushui-128) were significantly and positively related to concentration of soil available Cd in the paddy field with correlation coefficient being 0.982 and 0.978, respectively. According to the criteria in the National Standard for Grains and Food Safety (GB 2715-2012), the threshold of soil available Cd for safety production of Jia-33 and Xiushui-128 was 0.307 and 0.293 mg·kg^-1, respectively. Increased soil pH and content of soil organic matter by liming and application of organic manure reduced the content of soil available Cd in the paddy field, and hence uptake, transport and accumulation of Cd in rice. Pearson analysis reveals that Cd accumulation in polished rice was significantly and negatively related to soil pH and content of organic matter, which indicates that the two are important factors regulating cadmium accumulation in polished rice.

Key words: rice, cadmium, dose-dependent effect, regulation

中图分类号:

黄宇, 廖敏, 叶照金, 吕婷. 两种低镉积累水稻镉含量与土壤镉的剂量-效应关系及调控[J]. 生态与农村环境学报, 2017, 33(8): 748-754.

HUANG Yu, LIAO Min, YE Zhao-jin, LÜ Ting. Cd Concentrations in Two Low Cd Accumulating Varieties of Rice and Their Relationships With Soil Cd Content and Their Regulation Under Field Conditions[J]. Journal of Ecology and Rural Environment, 2017, 33(8): 748-754.

参考文献

[1] 郑喜珅,鲁安怀,高翔,等.土壤中重金属污染现状与防治方法[J].土壤与环境,2002,11(1):79-84.[ZHENG Xi-kun,LU An-huai,GAO Xiang,et al.Contamination of Heavy Metals in Soil Present Situation and Method[J].Soil and Environmental Sciences,2002,11(1):79-84.]
[2] 张继舟,王宏韬,倪红伟,等.我国农田土壤重金属污染现状、成因与诊断方法分析[J].土壤与作物,2012,1(4):212-218.[ZHANG Ji-zhou,WANG Hong-tao,NI Hong-wei,et al.Current Situation,Sources and Diagnosis Method Analysis of Heavy Metal Contamination in Agricultural Soils[J].Soil and Crop,2012,1(4):212-218.]
[3] 喻凤香,林亲录,陈煦.我国主稻作区稻谷镉和铅含量及其分布特征[J].生态与农村环境学报,2013,29(1):24-28.[YU Feng-xiang,LIN Qin-lu,CHEN Xu.Contents and Distributions of Cadmium and Lead in Rice From Main Rice Cultivation Areas in China[J].Journal of Ecology and Rural Environment,2013,29(1):24-28.]
[4] 丁真真.中国农田土壤重金属污染与其植物修复研究[J].水土保持研究,2007,14(3):19-20.[DING Zhen-zhen.Farmland Soil Heavy Metal Pollution in Our Country and Plant Repair Research[J].Research of Soil and Water Conservation,2007,14(3):19-20.]
[5] CHANGEY R L,REEVES P G,RYAN J A,et al.An Improved Understanding of Soil Cd Risk to Humans and Low Cost Methods to Phytoextract Cd From Contaminated Soils to Prevent Soil Cd Risks[J].Biometals,2004,17(5):549-553.
[6] 张良运,李恋卿,潘根兴.南方典型产地大米Cd、Zn、Se含量变异及其健康风险探讨[J].环境科学,2009,30(9):2792-2797.[ZHANG Liang-yun,LI Lian-qing,PAN Gen-xing,et al.Variation of Cd,Zn and Se Contents of Polished Rice and the Potential Health Risk for Subsistence-Diet Farmers From Typical Areas of South China[J].Environmental Science,2009,30(9):2792-2797.]
[7] 梁学峰,韩君,徐应明,等.海泡石及其复配原位修复镉污染稻田[J].环境工程学报,2015,9(9):4571-4577.[LIANG Xue-feng,HAN Jun,XU Ying-ming,et al.In-situ Remediation of Cd Polluted Paddy Soil Using Sepiolite and Combined Amendments[J].Chinese Journal of Environmental Engineering,2015,9(9):4571-4577.]
[8] 杨祥田,周翠,何贤彪,等.田间试验条件下不同基因型水稻对Cd和Pb的吸收分配特征[J].农业环境科学学报,2013,32(3):438-444.[YANG Xiang-tian,ZHOU Cui,HE Xian-biao,et al.Uptake and Partition of Cd and Pb Among Rice Genotypes in Contaminated Paddy Soil[J].Journal of Agro-Environment Science,2013,32(3):438-444.]
[9] 顾继光,周启星,王新.土壤重金属污染的治理途径及其研究进展[J].应用基础与工程科学学报,2003,11(2):143-151.[GU Ji-guang,ZHOU Qi-xing,WANG Xin.Reused Path of Heavy Metal Pollution in Soils and Its Research Advance[J].Journal of Basic Science and Engineering,2003,11(2):143-151.]
[10] 仲维功,杨杰,陈志德,等.水稻品种及其器官对土壤重金属元素Pb、Cd、Hg、As积累的差异[J].江苏农业学报,2006,22(4):331-338.[ZHONG Wei-gong,YANG Jie,CHEN Zhi-de,et al.Differences in Accumulation and Distribution of Pb,Cd,Hg and As in Rice Cultivars and Their Organs (Oryza sativa L.)[J].Jiangsu Journal of Agricultural Sciences,2006,22(4):331-338.]
[11] 范中亮,季辉,杨菲,等.不同土壤类型下Cd和Pb在水稻籽粒中累积特征及其环境安全临界值[J].生态环境学报,2010,19(4):792-797.[FAN Zhong-liang,JI Hui,YANG Fei,et al.Accumulation Characteristics of Cd and Pb in Rice Grain and Their Security Threshold Values in Paddy Field Under Different Soil Types[J].Ecology and Environmental Sciences,2010,19(4):792-797.]
[12] 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.[JI Xiong-hui,LIANG Yong-chao,LU Yan-hong,et al.The Effect of Water Management on the Mechanism and Rate of Uptake and Accumulation of Cadmium by Rice Growing in Polluted Paddy Soil[J].Acta Ecologica Sinica,2007,27(9):3930-3939.]
[13] 甲卡拉铁,喻华,冯文强,等.淹水条件下不同氮磷钾肥对土壤pH和镉有效性的影响研究[J].环境科学,2009,30(11):3414-3421.[JIA Ka-la-tie,YU Hua,FENG Wen-qing,et al.Effect of Different N,P and K Fertilizers on Soil pH and Available Cd Under Waterlogged Conditions[J].Environmental Science,2009,30(11):3414-3421.]
[14] GERRITSE R G,DRIEL W V.The Relationship Between Adsorption of Trace Metals,Organic Matter,and pH in Temperate Soils[J].Journal of Environmental Quality,1984,13(2):197-204.
[15] LIU K,LV J L,HE W X,et al.Major Factors Influencing Cadmium Uptake From the Soil Into Wheat Plants[J].Ecotoxicology and Environmental Safety,2015,113:207-213.
[16] 张楠.低积累型水稻品种的筛选及其配套阻控技术初探[D].杭州:浙江大学,2015.[ZHANG Nan.A Preliminary Study on Screening for Low Accumulation-Type Rice Cultivars and Forming a Set of Controlling Technology[D].Hangzhou:Zhejiang University,2015.]
[17] 鲍士旦.土壤农化分析[M].3版.北京:中国农业出版社,2000:25-114.[BAO Shi-dan.Soil and Agricultural Chemistry Analysis[M].3rd ed.Beijing:China Agriculture Press,2000:25-114.]
[18] SMITH C J,HOPMANS P,COOK F J.Accumulation of Cr,Pb,Cu,Ni,Zn and Cd in Soil Following Irrigation With Treated Urban Effluent in Australia[J].Environmental Pollution,1996,94(3):317-323.
[19] 颜世红,吴春发,胡友彪,等.典型土壤中有效态镉CaCl₂提取条件优化研究[J].中国农学通报,2013,29(9):99-104.[YAN Shi-hong,WU Chun-fa,HU You-biao,et al.Optimization of CaCl₂ Extraction of Available Cadmium in Typical Soils[J].Chinese Agricultural Science Bulletin,2013,29(9):99-104.]
[20] TESSIER A,CAMPBELL P G C,BISSON M.Sequential Extraction Procedure for the Speciation of Particulate Trace Metals[J].Analytical Chemistry,1979,51(7):844-851.
[21] 郑春荣,孙兆海,周东美,等.土壤Pb Cd污染的植物效应(Ⅰ):Pb污染对水稻生长和Pb含量的影响[J].农业环境科学学报,2004,23(3):417-421.[ZHEN Chun-rong,SUN Zhao-hai,ZHOU Dong-mei,et al.Plant Response to Soil Lead and Cadmium Pollution(Ⅰ):Effects of Soil Lead Pollution on Wetland Rice Growth and Its Uptake of Lead[J].Journal of Agro-Environment Science,2004,23(3):417-421.]
[22] 邓朝阳,朱霞萍,郭兵,等.不同性质土壤中镉的形态特征及其影响因素[J].南昌大学学报(工科版),2012,34(4):341-346.[DENG Zhao-yang,ZHU Xia-ping,GUO Bing,et al.Distribution and Influence Factors of Cd on the Soil With Different Properties[J].Journal of Nanchang University(Engineering & Technology),2012,34(4):341-346.]
[23] SINGH B R,KRISTEN M.Cadmium Uptake by Barley as Affected by Cd Sources and pH Levels[J].Geoderma,1998,84(1/2/3):185-194.
[24] 李冰,王昌全,代天飞,等.水稻子实对不同形态重金属的累积差异及其影响因素分析[J].植物营养与肥料学报,2007,13(4):602-610.[LI Bing,WANG Chan-quan,DAI Tian-fei,et al.Accumulation of Heavy Metals in Rice Seeds as Influenced by Metal Speciation and Soil Properties[J].Plant Nutrition and Fertilizer Science,2007,13(4):602-610.]
[25] 江巧君,周琴,韩亮亮,等.有机肥对镉胁迫下不同基因型水稻镉吸收和分配的影响[J].农业环境科学学报,2013,32(1):9-14.[JIANG Qiao-jun,ZHOU Qin,HAN Liang-liang,et al.Effects of Organic Manure on Uptake and Distribution of Cadmium in Different Rice Genotypes Under Cadmium Stress[J].Journal of Agro-Environment Science,2013,32(1):9-14.]
[26] 周利强,吴龙华,骆永明,等.有机物料对污染土壤上水稻生长和重金属吸收的影响[J].应用生态学报,2012,23(2):383-388.[ZHOU Li-qiang,WU Long-hua,LUO Yong-ming,et al.Effects of Organic Amendments on the Growth and Heavy Metal Uptake of Rice on a Contaminated Soil[J].Chinese Journal of Applied Ecology,2012,23(2):383-388.]
[27] 王阳,刘恩玲,王奇赞,等.紫云英还田对水稻镉和铅吸收积累的影响[J].水土保持学报,2013,27(2):189-193.[WANG Yang,LIU En-ling,WANG Qi-zan,et al.Effects of Milk Vetch on Cadmium and Lead Accumulation in Rice[J].Journal of Soil and Water Conservation,2013,27(2):189-193.]
[28] 刘昭兵,纪雄辉,谢运河,等.有机废弃物与化肥配施对污染稻田水稻产量及糙米镉铅含量的影响[J].湖南农业科学,2013,(5):38-41,44.[LIU Zhao-bing,JI Xiong-hui,XIE Yun-he,et al.Effects of Combined Application of Organic Wastes and Fertilizer on Rice Yield and Contents of Cd and Pb in Brown Rice in Contaminated Paddy Field[J].Hunan Agricultural Sciences,2013,(5):38-41,44.]
[29] 陕红,刘荣乐,李书田.施用有机物料对土壤镉形态的影响[J].植物营养与肥料学报,2010,16(1):136-144.[SHAN Hong,LIU Rong-le,LI Shu-tian.Cadmium Fractions in Soils as Influenced by Application of Organic Materials[J].Plant Nutrition and Fertilizer Science,2010,16(1):136-144.]
[30] 代允超,吕家珑,曹莹菲,等.石灰和有机质对不同性质镉污染土壤中镉有效性的影响[J].农业环境科学学报,2014,33(3):514-519.[DAI Yun-chao,LÜ Jia-long,CAO Ying-fei,et al.Effects of Lime and Organic Amendments on Cd Availability in Cd-Contaminated Soils With Different Properties[J].Journal of Agro-Environment Science,2014,33(3):514-519.]