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当前位置: 首页 > 文章 > 基施钢渣及生物炭结合水分管理阻控水稻镉砷吸收研究 农业环境科学学报 2018 (07) 1475-1483
Position: Home > Articles > Mitigation of cadmium and arsenic in rice plant by soil application of steel slag and/or biochar with water management Journal of Agro-Environment Science 2018 (07) 1475-1483

基施钢渣及生物炭结合水分管理阻控水稻镉砷吸收研究

作  者：
曹健;陈喆;吴箐;吴灼浩;董汉英;姚爱军;仇荣亮;王诗忠;何尔凯;汤叶涛
关键词：
钢渣;镉;砷;水稻;水分管理;阻控
摘  要：
采用土柱实验和田间实验,研究了不同水分管理、基施钢渣及生物炭对稻田-水稻系统中镉砷污染同时阻控的效果。土柱实验结果表明,持续性淹水(CF)降低了Cd的生物有效性,但显著提高了As在土壤中的溶出,钢渣显著提高了土壤p H,降低了土壤Eh,并同时降低了Fe和Cd的溶解,增加了土壤溶液中Mn和As的含量。田间实验结果表明,糙米中Cd和As的含量呈显著负相关(R=-0.838,P<0.05)。好氧环境下,基施钢渣及生物炭(A+SS、A+SS+BC)无法抑制Cd在稻米中的积累,而持续性淹水环境下基施钢渣和生物炭(CF+SS+BC)对水稻Cd和As具有同时阻控的效果,这或可成为水稻镉砷同时阻控的配套技术。
译  名：
Mitigation of cadmium and arsenic in rice plant by soil application of steel slag and/or biochar with water management
作  者：
CAO Jian;CHEN Zhe;WU Qing;WU Zhuo-hao;DONG Han-ying;YAO Ai-jun;QIU Rong-liang;WANG Shi-zhong;HE Er-kai;TANG Ye-tao;School of Geography and Planning, Sun Yat-Sen University;School of Environmental Science and Engineering , Sun Yat-Sen University;Guangdong Provincial Key Lab of Environmental Pollution Control and Remediation Technology;The Joint Soil Remediation Research Center of Sun Yat-Sen University and Topcent Enviro Group LTD;
单  位：
CAO Jian%CHEN Zhe%WU Qing%WU Zhuo-hao%DONG Han-ying%YAO Ai-jun%QIU Rong-liang%WANG Shi-zhong%HE Er-kai%TANG Ye-tao%School of Geography and Planning, Sun Yat-Sen University%School of Environmental Science and Engineering , Sun Yat-Sen University%Guangdong Provincial Key Lab of Environmental Pollution Control and Remediation Technology%The Joint Soil Remediation Research Center of Sun Yat-Sen University and Topcent Enviro Group LTD
关键词：
steel slag;;cadmium;;arsenic;;rice;;water management;;mitigation
摘  要：
Simultaneous mitigation of cadmium(Cd)and arsenic(As)in rice grain has been a great challenge, in contaminated paddy soil-rice system. Here, a soil column experiment and a field experiment were conducted to investigate the optimal mitigation strategies on Cd andAs contaminated paddy soil by soil application of steel slag and/or biochar with water managements. Soil column experimental resultsshowed that continuous flooding(CF)decreased Cd but increased As concentrations in soil solutions. Soil application of steel slag(SS)sig-nificantly increased soil p H but decreased soil Eh. Meanwhile, SS treatment reduced the Fe/Cd concentrations but increased Mn/As concen-trations in soil solutions. The field trial data showed that there was a significant negative correlation(R=-0.838, P<0.05)between brownrice Cd and brown rice As. The results indicate that aerobic condition could not reduce Cd accumulation in rice grain. However, soil application of steel slag and biochar with continuous flooding condition(CF+SS+BC)had the best mitigation effect on both Cd and As concentrations(rice Cd reduced by 80% and rice As kept unchanged)in rice grain simultaneously. Hence it could be one of the effective strategies tomitigate Cd and As accumulation in rice plant.

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