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| THE SELENIUM-RICH CHARACTERISTICS OF SOILS AND PLANTS IN SHITOU RIVER AREA,SHANXI PROVINCE |
| YIN Zong-yi, WANG Hui-feng, REN Rui, PENG Li-hua, CHAO Xu, LU Ting, WANG Ming-xia |
| Shanxi Geological Investigation Center, Xi'an 710016, China |
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Abstract The abundance and deficiency of soil selenium is closely related to the health of human being and animals.According to the classification definition standard of soil selenium amount put forward by Li Jiaxi,it is confirmed that there exist selenium-rich soil (0.2~0.4×10-6) and selenium-moderate soil (>0.4×10-6) in Shitou River area.The analytical results of wheat seeds show that the Se amount is up to the standard of selenium-rich wheat.A study of the modality of Se in the soil shows that the Se content change of stream sediments and cinnamon soil,water soluble state,residue,Fe-Mn oxides and carbonate-bound selenium is in order of paddy soil >stream sediment >cinnamon soil.Soil pH value has a great impact on the amount of ion exchange state selenium,and the addition of a certain mount of CaCO3 can improve pH value in acid soil and is in favor of increasing the solubility of selenium.
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Received: 15 November 2013
Published: 10 April 2014
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