湖南重度镉污染稻田钝化管控技术研究
|
摘要
[目的]研究钝化管控技术对重度镉污染稻田的修复效果和水稻生长效应。[方法]选取湖南省镉污染稻田作为案例地,并对其进行污染特征分析、风险评价,采用钝化技术对其进行管控,最后对该管控技术进行分析与评价。[结果]采用钝化管控技术能使土壤pH显著提高,水稻稻米中镉含量显著降低,稻米中镉降低29.45%～37.5%;能促进水稻生长并具有增产效果,增产2.51%～6.31%。[结论]结合水稻生长和稻米镉含量的降低率以及钝化剂成本看,钝化剂的最佳添加量为3 000 kg/hm~2。
[Objective]To study the effect of remediation on passivator and rice growth in a case of cadmium contaminated rice field in Hunan Province.[Method]Through the analysis of pollution characteristics of the case,passivation technology was used to control the risk assessment,finally,the results of the control technology were analyzed and evaluated.[Result]The passivation control technology could significantly increase the soil pH,significantly reduce the cadmium content in rice,and reduce the cadmium content in rice by 29.45%-37.5%.It could promote the growth of rice and increase the yield,which was 2.51%-6.31%.[Conclusion]Considering the growth rate of rice,the reduction rate of cadmium content in rice and the cost of passivating agent,the optimal addition amount of passivating agent in this case study was 3 000 kg/hm~2.
[Objective]To study the effect of remediation on passivator and rice growth in a case of cadmium contaminated rice field in Hunan Province.[Method]Through the analysis of pollution characteristics of the case,passivation technology was used to control the risk assessment,finally,the results of the control technology were analyzed and evaluated.[Result]The passivation control technology could significantly increase the soil pH,significantly reduce the cadmium content in rice,and reduce the cadmium content in rice by 29.45%-37.5%.It could promote the growth of rice and increase the yield,which was 2.51%-6.31%.[Conclusion]Considering the growth rate of rice,the reduction rate of cadmium content in rice and the cost of passivating agent,the optimal addition amount of passivating agent in this case study was 3 000 kg/hm~2.
引文
[1] 黄益宗,郝晓伟,雷鸣,等.重金属污染土壤修复技术及其修复实践[J].农业环境科学学报,2013,32(3):409-417.
[2] IKSONG HAM,胡林飞,吴建军,等.泥炭对土壤镉有效性及镉形态变化的影响[J].土壤通报,2009,40(6):1436-1441.
[3] MUSTAFA G,SINGH B,KOOKANA R S,et al.Cadmium adsorption and desorption behaviour on goethite at low equilibrium concentrations:Effects of pH and index cations[J].Chemosphere,2004,57(10):1325-1333.
[4] 贾乐,朱俊艳,苏德纯.秸秆还田对镉污染农田土壤中镉生物有效性的影响[J].农业环境科学学报,2010,29(10):1992-1998.
[5] 王凯荣.农田生态系统镉污染研究[D].武汉:华中农业大学,2004.
[6] 邓腾灏博,谷海红,仇荣亮.钢渣施用对多金属复合污染土壤的改良效果及水稻吸收重金属的影响[J].农业环境科学学报,2011,30(3):455-460.
[7] 高卫国,黄益宗,孙晋伟,等.赤泥和堆肥对土壤锌形态转化的影响[J].农业环境科学学报,2008,27(3):879-883.
[8] 郝晓伟,黄益宗,崔岩山,等.赤泥和骨炭对污染土壤As化学形态及其生物可给性的影响[J].环境化学,2010,29(3):383-387.
[9] 杨剑虹,王成林,代亨林.土壤农化分析与环境监测[M].北京:中国大地出版社,2008.
[10] 熊婕,朱奇宏,黄道友,等.南方稻田土壤有效态镉提取方法研究[J].农业现代化研究,2018,39(1):170-177.
[11] RAO Z X,HUANG D Y,ZHU Q H,et al.Effects of amendments on the available of Cd in contaminated paddy soil:A three-year field experiment[J].Journal of food,agriculture&environment,2013,11(3/4):2009-2014.
[12] 范美蓉,罗琳,廖育林,等.赤泥对重金属污染稻田土壤Pb、Zn和Cd的修复效应研究[J].安徽农业科学,2012,40(6):3298-3300,3330.
[13] 王林,徐应明,孙国红,等.海泡石和磷酸盐对镉铅污染稻田土壤的钝化修复效应与机理研究[J].生态环境学报,2012,21(2):314-320.
[14] GRAY C W,DUNHAM S J,DENNIS P G,et al.Field evaluation of in situ remediation of a heavy metal contaminated siol using lime and red mud[J].Environmental pollution,2006,142(3):530-539.
[2] IKSONG HAM,胡林飞,吴建军,等.泥炭对土壤镉有效性及镉形态变化的影响[J].土壤通报,2009,40(6):1436-1441.
[3] MUSTAFA G,SINGH B,KOOKANA R S,et al.Cadmium adsorption and desorption behaviour on goethite at low equilibrium concentrations:Effects of pH and index cations[J].Chemosphere,2004,57(10):1325-1333.
[4] 贾乐,朱俊艳,苏德纯.秸秆还田对镉污染农田土壤中镉生物有效性的影响[J].农业环境科学学报,2010,29(10):1992-1998.
[5] 王凯荣.农田生态系统镉污染研究[D].武汉:华中农业大学,2004.
[6] 邓腾灏博,谷海红,仇荣亮.钢渣施用对多金属复合污染土壤的改良效果及水稻吸收重金属的影响[J].农业环境科学学报,2011,30(3):455-460.
[7] 高卫国,黄益宗,孙晋伟,等.赤泥和堆肥对土壤锌形态转化的影响[J].农业环境科学学报,2008,27(3):879-883.
[8] 郝晓伟,黄益宗,崔岩山,等.赤泥和骨炭对污染土壤As化学形态及其生物可给性的影响[J].环境化学,2010,29(3):383-387.
[9] 杨剑虹,王成林,代亨林.土壤农化分析与环境监测[M].北京:中国大地出版社,2008.
[10] 熊婕,朱奇宏,黄道友,等.南方稻田土壤有效态镉提取方法研究[J].农业现代化研究,2018,39(1):170-177.
[11] RAO Z X,HUANG D Y,ZHU Q H,et al.Effects of amendments on the available of Cd in contaminated paddy soil:A three-year field experiment[J].Journal of food,agriculture&environment,2013,11(3/4):2009-2014.
[12] 范美蓉,罗琳,廖育林,等.赤泥对重金属污染稻田土壤Pb、Zn和Cd的修复效应研究[J].安徽农业科学,2012,40(6):3298-3300,3330.
[13] 王林,徐应明,孙国红,等.海泡石和磷酸盐对镉铅污染稻田土壤的钝化修复效应与机理研究[J].生态环境学报,2012,21(2):314-320.
[14] GRAY C W,DUNHAM S J,DENNIS P G,et al.Field evaluation of in situ remediation of a heavy metal contaminated siol using lime and red mud[J].Environmental pollution,2006,142(3):530-539.