Study on the relationship between soil selenium and plant selenium uptake
Zhao; CY; Ren; JG; Xue; CZ; Lin; ED; Zhao, CY, CAS, Xinjiang Inst Ecol & Geog, 40-3 S Beijing Rd, Urumqi 830011, Xinjiang, Peoples R China
2005
Source PublicationPLANT AND SOIL
ISSN0032-079X
Volume277Issue:40545Pages:197-206
AbstractVarious extraction methods have been used to determine selenium (Se) concentrations in soils and plants in the second seleniferous regions of China. Our results show tea Se contents in the study area range from 1.009 to 2.6 mg/kg, which reveal that the tea areas in Ziyang County are in seleniferous regions. The four extraction methods evaluated in this study provide different information concerning soil and plant Se levels. The quality control/quality assurance program for this project indicated there is excellent agreement between total soil Se and extractable Se. For example, phosphate extractable Se results from the field investigation and greenhouse study were found to be highly correlated (R-2 > 0.91) by linear regression analyses. Results from rye seedling experiments further show phosphate extractable Se has significant correlations with plant Se uptake and that a 0.1 M solution of KH2PO4 can be used as the extractant of soil available Se. In the acid soil, the Brassica campestris yield could be significantly reduced when the content of Se6+ -Se 0.5 mg/kg, and the influence on the yield was not as obvious when the content of Se6+-Se reached up to 2.0 mg/kg. The uptake by Brassica campestris of Se6+-Se is higher than that of Se4+-Se. The main factors influencing the biological availability of soil Se, in order of their importance are CaCO3, the presence of silt grains, organic matter and the presence of clay grains. pH could affect KH2PO4 extractable Se through CaCO3.
DepartmentCAS, Xinjiang Inst Ecol & Geog, Urumqi 830011, Xinjiang, Peoples R China; CAAS, Agroenvironm & Sustainable Dev Inst, Beijing 100081, Peoples R China
KeywordAvailability Toxicity
Subject Area植物生理学
Indexed BySCI
Document Type期刊论文
Identifierhttp://ir.xjlas.org/handle/365004/10492
Collection中国科学院新疆生态与地理研究所(2010年以前数据)
Corresponding AuthorZhao, CY, CAS, Xinjiang Inst Ecol & Geog, 40-3 S Beijing Rd, Urumqi 830011, Xinjiang, Peoples R China
Recommended Citation
GB/T 7714
Zhao,CY,Ren,et al. Study on the relationship between soil selenium and plant selenium uptake[J]. PLANT AND SOIL,2005,277(40545):197-206.
APA Zhao.,CY.,Ren.,JG.,Xue.,...&Zhao, CY, CAS, Xinjiang Inst Ecol & Geog, 40-3 S Beijing Rd, Urumqi 830011, Xinjiang, Peoples R China.(2005).Study on the relationship between soil selenium and plant selenium uptake.PLANT AND SOIL,277(40545),197-206.
MLA Zhao,et al."Study on the relationship between soil selenium and plant selenium uptake".PLANT AND SOIL 277.40545(2005):197-206.
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