Characteristics of bioavailable selenium in different types of selenium-rich soils
-
摘要: 生物有效硒是评价土壤中硒对植物供给能力的重要指标,目前,我国缺少测试土壤有效硒的国家标准方法。本文采用了10种不同的化学浸提剂对土壤有效硒进行提取,结果表明,各浸提剂浸提能力大小顺序依次为:NaOH(10.57%)> SOL-Se+EX-Se(8.10%)> AB-DTPA(6.79%)> NaHCO3(4.99%) > K2SO4(4.57%) > KH2PO4>-K2HPO4(4.33%) > KH2PO4(3.05%) > SOL-Se(2.28%)> EDTA(1.40%)> NH4F-HCl(1.22%),其中KH2PO4、NaHCO3、SOL-Se、KH2PO4-K2HPO4、AB-DTPA提取的土壤有效硒均与作物硒含量之间存在极显著的相关性。通过土壤有效硒百分含量与土壤性质的关系发现,土壤有效硒百分含量与风化指数(CIA)、(烧失量)LOI、pH、Eh、P、SiO2等条件显著性相关,其中pH、Eh主要影响Se在土壤中的存在形式,而CIA、LOI、P、SiO2等指标则反映土壤风化程度和吸附质对土壤有效硒的作用。该研究成果为硒的生态农业发展及富硒土地资源开发利用提供数据基础和科学依据。Abstract: Bioavailable selenium (Se) is an important indicator used to evaluate the supply capacity of Se in the soil to plants. There is a lack of national standard methods for testing bioavailable Se in the soil in China presently. This study used ten different chemical extractants to extract bioavailable Se from the soil. The results show that the extraction capacity of extractants was in the order of NaOH (10.57%) > SOL-Se+EX-Se (8.10%) > AB-DTPA (6.79) > NaHCO3 (4.99%) > K2SO4 (4.57%) > KH2PO4-K2HPO4 (4.33%) > KH2PO4 (3.05%) > SOL-Se (2.28%) > EDTA (1.40%) > NH4F-HCl (1.22%). Among them, the bioavailable Se extracted from the soil by KH2PO4, NaHCO3, SOL-Se, KH2PO4-K2HPO4, and AB-DTPA was significantly correlated with the Se content of crops. As revealed by the relationship between the percentage content of bioavailable Se in soil and soil properties, the percentage content of bioavailable Se in soil significantly correlated with indicators such as the chemical index of alteration (CIA), LOI, pH, Eh, P, and SiO2. Among them, pH and Eh mainly affect the existence form of Se in the soil, while indicators such as CIA, LOI, P, and SiO2 reflect the alteration degree of soil and the effect of adsorbates on bioavailable Se in soil. The results of this study can provide data support and a scientific basis for the development of Se-based ecological agriculture and the development and utilization of Se-rich land resources.
-
Key words:
- bioavailable Se /
- soil /
- extractant
-
-
[1] Rayman M P, Lyons T P, Cole D J A. The importance of selenium to human health.[J]. Lancet, 2000, 356(9225):233.
[2] De Temmerman L, Waegeneers N, Thiry C, et al. Selenium content of Belgian cultivated soils and its uptake by field crops and vegetables[J]. Science of the Total Environment, 2014, 69(15):77-82.
[3] Tan J, Huang Y. Selenium in geo-ecosystem and its relation to endemic diseases in China[J]. Water Air & Soil Pollution, 1991,57- 58(1):59-68.
[4] Moreno Rodriguez M J, Cala R V, Jiménez B R. Selenium distribution in topsoils and plants of a semi-arid Mediterranean environment[J]. Environmental Geochemistry & Health, 2005, 27(5/6):513.
[5] Zhao C, Ren J, Xue C, et al. Study on the Relationship between soil selenium and plant selenium uptake[J]. Plant & Soil, 2005, 277(1/2):197-206.
[6] Statwick J, Sher A A. Selenium in soils of western Colorado[J]. Journal of Arid Environments, 2017, 137(2):1-6.
[7] 黄春雷, 宋明义, 魏迎春. 浙中典型富硒土壤区土壤硒含量的影响因素探讨[J]. 环境科学, 2013, 34(11):4405-4410.
[8] Huang C L, Song M Y, Wei Y C, et al. Discussion on influencing factors of soil selenium content in typical selenium-rich soil areas in central Zhejiang[J]. Environmental Science, 2013, 34(11):4405-4410.
[9] 侯军宁, 李继云. 土壤硒的形态及有效硒的提取[J]. 土壤学报, 1990, 27(4):405-410.
[10] Hou J N, Li J Y. The form of soil selenium and the extraction of available selenium[J]. Acta Pedologica Sinica, 1990, 27(4):405-410.
[11] 赵妍, 宗良纲, 曹丹, 等. 江苏省典型茶园土壤硒分布特性及其有效性研究[J]. 农业环境科学学报, 2011, 30(12):2467-2474.
[12] Zhao Y, Zong L G, Cao D, et al. Study on the distribution characteristics and availability of selenium in typical tea garden soils in Jiangsu Province[J]. Journal of Agricultural Environment Sciences, 2011, 30(12):2467-2474.
[13] 赵成义, 任景华. 酸性土壤有效态硒浸提方法的研究[J]. 干旱环境监测, 1991, 1(1):38-41.
[14] Zhao C Y, Ren J H. Study on extraction method of effective selenium in acid soil[J]. Drought Environmental Monitoring, 1991, 1(1):38-41.
[15] 赵成义. 土壤硒的生物有效性研究[J]. 中国环境科学, 2004, 24(2):184-187.
[16] Zhao C Y. Study on the bioavailability of soil selenium[J]. China Environmental Science, 2004, 24(2):184-187.
[17] 温国灿, 黄艳, 郭永玲, 等. 酸性土壤有效硒提取条件优化的研究[J]. 农业环境科学学报, 2007, 26(5):1996-2000.
[18] Wen G C, Huang Y, Guo Y L, et al. Study on the optimization of extraction conditions for effective selenium in acidic soils[J]. Journal of Agricultural Environment Sciences, 2007, 26(5):1996-2000.
[19] 刘军鸽, 刘鹏, 葛旦之, 等. 淹水土壤有效态硒浸提剂的比较研究[J]. 湖南农业大学学报, 2000, 26(1):5-8.
[20] Liu J G, Liu P, Ge D Z, et al. Comparative study of available selenium extractants in flooded soils[J]. Journal of Hunan Agricultural University, 2000, 26(1):5-8.
[21] Yamada H, Kamada A, Usuki M, et al. Total selenium content of agricultural soils in Japan[J]. Soil Science and Plant Nutrition, 2009, 55(5),616-622.
[22] 瞿建国, 徐伯兴, 龚书椿. 上海不同地区土壤中硒的形态分布及其有效性研究[J]. 土壤学报, 1998, 35(3):398-403.
[23] Qu J G, Xu B X, Gong S C, et al. The distribution and availability of selenium in different areas of Shanghai[J]. Acta Pedologica Sinica, 1998, 35(3):398-403.
[24] Sharmasarkar S, Vance G F. Extraction and distribution of soil organic and inorganic selenium in coal mine environments of Wyoming,USA[J]. Environmental Geology, 1997, 29(1/2):17-22.
[25] Dhillon K S, Rani N, Dhillon S K. Evaluation of different extractants for the estimation of bioavailable selenium in seleniferous soils of Northwest India[J]. Soil Research, 2005, 43(5):639-645.
[26] 朱英, 王锝, 熊玉祥. 土壤中有效硒的提取和测定方法[J]. 资源环境与工程, 2009, 23(6):859-862.
[27] Zhu Y, Wang T, Xiong Y X, et al. Extraction and determination method of available selenium in soil[J]. Resources Environment and Engineering, 2009, 23(6):859-862.
[28] Jing W, Li H, Yang L, et al. Distribution and translocation of selenium from soil to highland barley in the Tibetan Plateau Kashin-Beck disease area[J]. Environmental Geochemistry & Health, 2017, 39(1):221-229.
[29] 梁重山, 党志. 土壤有机质提取方法的研究进展[J]. 矿物岩石地球化学通报, 2001, 4(1):58-61.
[30] Liang C S, Dang Z. Research progress on soil organic matter extraction methods[J]. Bulletin of Mineralogy,Petrology and Geochemistry, 2001, 4(1):58-61.
[31] 谢薇, 杨耀栋, 菅桂芹, 等. 四种浸提剂对果园与菜地土壤有效硒浸提效果的对比研究[J]. 岩矿测试, 2020, 39(3):125-132.
[32] Xie W, Yang Y D, Jian G Q, et al. Comparative study on the effective selenium extraction effect of four extractants on orchard and vegetable soil[J]. Rock and Mineral Testing, 2020, 39(3):125- 132.
[33] 耿建梅, 王文斌, 罗丹, 等. 不同浸提剂对海南稻田土壤有效硒浸提效果比较[J]. 土壤, 2010, 42(4):624-629.
[34] Geng J M, Wang W B, Luo D, et al. Comparison of effective selenium extraction effects of different extractants on Hainan paddy soil[J]. Soil, 2010, 42(4):624-629.
[35] Soltanpour P N, Schwab A P. A new soil test for simultaneous extraction of macro and micro-nutrients in alkaline soils[J]. Communications in Soils Science and Plant Analysis, 1977, 8(3):195-207.
[36] 朱侠, 李连祯, 涂晨, 等. 不同性质农田土壤中铜的可提取性与生物有效性及毒性[J]. 土壤, 2020, 52(5):47-55.
[37] Zhu X, Li L Z, Tu C, et al. Extractability,bioavailability and toxicity of copper in farmland soils with different properties[J]. Soil, 2020, 52(5):47-55.
[38] Hamdy A A. Fractionation of Soil Selenium[J]. La Houille Blanche, 1976, 5(6):619-640.
[39] Qin H B, Zhu J M, Su H. Selenium speciation in organic matter from Se-rich soils and weathered stone coal in selenosis areas of China[J]. Chemosphere, 2012, 86(6):626-633.
[40] 付中彪, 何宁洁, 鲍征宇, 等. 赣南地区水稻—根系土系统中硒含量影响因素分析[J]. 地质科技情报, 2019, 38(5):220-229.
[41] Fu Z B, He N J, Bao Z Y, et al. Analysis of factors affecting selenium content in rice-root soil system in southern Jiangxi[J]. Geological Science and Technology Information, 2019, 38(5):220-229.
[42] Goh K H, Lim T T. Geochemistry of inorganic arsenic and selenium in a tropical soil:Effect of reaction time,pH,and competitive anions on arsenic and selenium adsorption[J]. Chemosphere, 2004, 55(6):849-859.
[43] 杨忠芳, 余涛, 侯青叶, 等. 海南岛农田土壤Se的地球化学特征[J]. 现代地质, 2012, 26(5):837-849.
[44] Yang Z F, Yu T, Hou Q Y, et al. Geochemical characteristics of Se in farmland soils in Hainan Island[J]. Geoscience, 2012, 26(5):837-849.
-
计量
- 文章访问数: 723
- PDF下载数: 161
- 施引文献: 0
下载: