全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

不同钝化剂配施硫酸锌对石灰性土壤中镉生物有效性的影响研究

Keywords: ,石灰性土壤,豇豆,钝化剂,修复

Full-Text   Cite this paper   Add to My Lib

Abstract:

为了降低轻度镉(Cd)污染土壤中Cd的生物有效性以确保农产品安全,以低吸收豆类蔬菜(豇豆)作为供试植物,通过田间试验研究了在轻度Cd污染(Cd1.5mg·kg-1)石灰性土壤中施加赤泥、油菜秸秆、玉米秸秆、赤泥+油菜秸秆等钝化处理并配施硫酸锌肥料对土壤中Cd的生物有效性的影响。结果表明,与对照相比,不同钝化处理可显著(P<0.05)降低豇豆豆角中Cd浓度和土壤中可溶态Cd浓度;钝化处理条件下豇豆豆角中Cd浓度降低了27%(玉米秸秆)~83%(赤泥+油菜秸秆)。在施加钝化剂的基础上,配施硫酸锌肥料可进一步降低豇豆对Cd的吸收,各钝化处理在配施锌肥后,豇豆豆角中Cd平均浓度与未施锌肥相比降低了27%。对不同作物秸秆而言,富含巯基的油菜秸秆比富含纤维素的玉米秸秆钝化效果好。由此可见,在轻度Cd污染的石灰性土壤中,无机钝化剂赤泥和富含巯基的油菜秸秆复合使用是一种高效且环境友好的钝化手段。同时,合理施用锌肥可能会进一步降低作物对Cd的吸收。

References

[1]  Hrustioger S C,Phytochelatins and their roles in heavy metal detoxification,Plant Physiology,2000.
[2]  Freeman J L;Persans M W;Nieman K,Increased glutathione biosynthesis plays a role in nickel tolerance in thlaspi nickel hyperaccumulators,Plant Cell,2004.
[3]  Mishra S;Tripathi R D;Srivastava S,Thiol metabolism play significant role during cadmium detoxification by Ceratophyllum demersum L,Bioresource Technology,2009.
[4]  罗美,贵州市郊区菜地土壤-蔬菜系统中镉污染分析及调控研究,中国优秀硕士学位论文全文数据库:贵州大学,2008.
[5]  梁彦秋;刘婷婷;铁梅.镉污染土壤中镉的形态分析及植物修复技术研究[J].环境科学与技术,2007(2)
[6]  王圆方;朱宁;颜丽,外源Cd2+在土壤各级微团聚体中的含量和形态分布,生态环境学报,2009(4).
[7]  贾琳;杨林生,典型农业区农田上壤重金属潜在生态风险评价,农业环境科学学报,2009(11).
[8]  徐龙君;袁智,外源镉污染及水溶性有机质对土壤中Cd形态的影响研究,土壤通报,2009(6).
[9]  Basta N T;Gradwohl M,Estimation of Cd,Pb,and Zn bioavailability in smelter-contaminated soils by a sequential extraction procedure,Journal of Soil Contamination,2000.
[10]  钟晓兰;周生路;赵其国,长江三角洲地区土壤重金属污染特征及潜在生态风险评价:以江苏太仓市为例,地理科学,2007(3).
[11]  Yi L;Hong Y T;Wang D J,Effect of red mud on the mobility of heavy metals in mining-contaminated soils,Chinese Journal of Geochemistry,2010(29).
[12]  Luo L;Ma Y B;Zhang S Z,An inventory of trace element inputs to agricultural soils in China,Journal of Environmental Management,2009.
[13]  于云江;胡林凯;杨彦.典型流域农田土壤重金属污染特征及生态风险评价[J].环境科学研究,2010(12)
[14]  易秀;谷晓静;侯燕卿.陕西省泾惠渠灌区土壤重金属污染潜在生态风险评价[J].干旱地区农业研究,2010(6)
[15]  Yang J X;Wang L Q;Wei D P,Foliar spraying and seed soaking of zinc fertilizers:Decreased cadmium accumulation in cucumbers grown in Cd-contaminated soils,Soil and Sediment Contamination,2011.
[16]  Oliver D P;Hannam R;Tiller K G,The effects of zinc fertilization on cadmium concentration in wheat grain,Journal of Environmental Pollution,1994.
[17]  Luo L;Ma C Y;Ma Y B,New insights into the sorption mechanism of cadmium on red mud,Environmental Pollution,2011.
[18]  Yang J X;Guo H T;Ma Y B.Genotypic variations in the accumulation of Cd exhibited by different vegetables[J].Journal of Environmental Sciences,2010(8)doi:10.1016/S1001-,0742(9)60245-X
[19]  Alexander P D;Alloway B J;Dourado A M,Genotypic variations in the accumulation of Cd,Cu,Pb and Zn exhibited by six common grown vegetables,Environmental Pollution,2006.
[20]  Wang G;Su M Y;Chen Y H,Transfer characteristics of cadmium and lead from soil to the edible parts of six vegetable species in southeastern China,Environmental Pollution,2006.
[21]  王立群;罗磊;马义兵.不同钝化剂和培养时间对Cd污染土壤中可交换态Cd的影响[J].农业环境科学学报,2009(6)
[22]  Friesl W;Platzer K;Horak O,Immobilising of Cd,Pb,and Zn contaminated arable soils close to a former Pb/Zn smelter:A field study in Austria over 5 years,Environmental Geochemistry and Health,2009.
[23]  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(10)
[24]  Cui Y S;Du X;Weng L P,Effect ofrice straw on the speciation of cadmium (Cd)and copper (Cu)in soils,Environmental Pollution,2008.
[25]  Lee S H;Kim E Y;Park H,In situ stabilization of arsenic and metal-contaminated agricultural soil using industrial by-products,Geoderma,2011.
[26]  Castaldi P;Melis P;Silvettn M,Influence of pea and wheat growth on Pb,Cd,and Zn mobility and soil biological status in a polluted amended soil,Geoderma,2009.
[27]  Lombi E;Zhao F J;Wieshammer G,In situ fixation of metals in soils using bauxite residue:Biological effects,Environmental Pollution,2002.
[28]  Hassinen V;Vallinkoski V;Issakainen S,Correlation of foliar MT2b expression with Cd and Zn concentrations in hybrid aspen(Populus tremula×tremulpides)grown in contaminated soil,Environmental Pollution,2009.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133