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| THE TRANSPORT AND TRANSFORMATION OF SELENIUM IN THE SOIL-PADDY PLANT SYSTEM AFFECTED BY GEOLOGICAL FACTORS |
| Li Yi-gen1, DONG Yan-xiang2, ZHENG Jie2, XIE Huai-sheng2, SONG Ming-yi2 |
1. Shenfeng Institute of Novel Geological Techniques CO., LTD., Shanghai 201107, China;
2. Zhejiang Institute of Geological Survey, Hangzhou 311203, China |
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Abstract The root system selenium has relationship not only with the amount of selenium, but also with the acidity and alkalinity of soil. The amount of selenium in surface paddy is lower than that in the root system.The amount of selenium in leaves is lower than that in root but higher than in trunk, with the fringe part having the lowest selenium.42%～50% of selenium in the plant at surface earth is in the fringe, and only 2.31%～4.31% of selenium is in the plant. Moreover, the amount of selenium in unpolished rice is lower than that in paddy but higher than that in rice. There is a direct proportion between the amount of selenium in paddy and the acidity and alkalinity of soil, which means the stronger the alkali in soil is, the higher the amount of selenium in paddy becomes. The amount of selenium in the body of paddy has something to do with that in the paddy soil, which means that there exists a direct proportion between the amount of selenium in soil and that in paddy.
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Received: 17 May 2005
Published: 24 February 2007
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| [1] |
WANG Zhi-Qiang, YANG Jian-Feng, WEI Li-Xin, SHI Tian-Chi, CAO Yuan-Yuan. Geochemical characteristics and bioavailability of selenium in alkaline soil in Shizuishan area, Ningxia[J]. Geophysical and Geochemical Exploration, 2022, 46(1): 229-237. |
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XU Yun-Feng, HAO Xue-Feng, QIN Yu-Long, WANG Xian-Feng, XIONG Chang-Li, LI Ming-Ze, WU Weng-Hui, ZHAN Han-Yu. Geochemical characteristics of stream sediments and prospecting direction in Chahe area of Sichuan Province[J]. Geophysical and Geochemical Exploration, 2021, 45(3): 624-638. |
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