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| Effect of different amendments and water management on arsenic uptake and accumulation by rice in arsenic contaminated soil |
| Received:May 27, 2019 |
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| KeyWord:arsenic contaminated soil;water management;amendments;rice |
| Author Name | Affiliation | E-mail | | WANG Bing-shuo | Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China
School of Geography and Environmental Science, Guizhou Normal University, Guiyang 550001, China | | | HUANG Yi-wen | Beijing 101 Middle School, Beijing 100091, China | | | LI Juan | School of Geography and Environmental Science, Guizhou Normal University, Guiyang 550001, China | | | LONG Jian | Guizhou Provincial Key Laboratory for Information System of Mountainous Areas and Protection of Ecological Environment, Guizhou Normal University, Guiyang 550001, China | | | HUANG Yi-zong | Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China | yizonghuang@126.com | | HAN Nian | Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China | |
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| Abstract: |
| To screen the effective remediation model of As-contaminated farmland, the effect of different mixed amendments and water management on the uptake and accumulation of As in As-contaminated soil were compared using a pot experiment. The results showed the concentrations of As in soil and rice grains, shoots, and roots were lower under the non-flooded conditions, while the higher As concentrations were seen under the flooded conditions. Under different water management methods, compared with the control treatment, with the addition of Si + Mo the concentration of As in grains decreased by 4.8%~19.9% and in shoots by 16.9%~56.3%. With the addition of Fe + Ca, the concentration of As in grains decreased by 26.6%~50.6% and in shoots by 40.3%~81.2%. The addition of amendments could also reduce the ability of As transport from rice roots to shoots and grains. To sum up, the effect of non-flooded + Fe + Ca on reducing As concentration in rice was the most noticeable. |
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