| 土壤砷有效性研究 |
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| 引用本文： | 涂从,苗金燕.土壤砷有效性研究[J].西南农业大学学报,1992,14(6):477-482. |
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| 作者姓名： | 涂从 苗金燕 |
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| 作者单位： | 西南农业大学土化系，西南农业大学土化系，西南农业大学土化系 |
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| 摘 要： |
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| 关 键 词： | 土壤砷 有效性 |
A STUDY OF AVAILABILITY OF SOIL ARSENIC |
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| Tu Coug,Miao Jinyan,He Feng Dept. of Soil Science & Agrochcmistry,SWAU.A STUDY OF AVAILABILITY OF SOIL ARSENIC[J].Journal of Southwest Agricultural University,1992,14(6):477-482. |
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| Authors: | Tu Coug Miao Jinyan He Feng Dept of Soil Science & Agrochcmistry SWAU |
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| Abstract: | Biological experiments,in which a sequential extraction procedure was adopted to fractionate various As forms,were carried out to study the availability of soil As to plants and to evaluate the efficiency of different extractants,i.e.0.5 mol/1 NaHCO_3(pH 8.5),1.0 mol/1 NH_4Cl and 1.0 mol/l HCl.The As forms available to plants varied with soil type. Al-As exchangeable and water soluble As appeared available to plants in calcareous soils while in noncalcareous soils Fe-As and Al-As were.Of the three extractants studied,only NaHCO_3proved to be able to remove the As fractions available to plants.It is suggested that 0.5 mol/l NaHCO_3can be used as a satisfactory and universal extractant for assessing available soil As. |
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| Keywords: | Arsenic soil/availability |
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