干旱区生态环境知识资源中心(Arid): 水稻秸秆炭及组合改良剂对石漠化地区土壤-玉米系统中重金属迁移特征影响

Arid

	水稻秸秆炭及组合改良剂对石漠化地区土壤-玉米系统中重金属迁移特征影响
其他题名	Effects of straw biochar and amendments on heavy metals translocation in corn-soil system in rocky desertification area
	孔玮琳 1; 叶丽丽 2; 李顺安 1; 袁贤斌 1; 蒋金平 2
来源期刊	环境工程学报
ISSN	1673-9108
出版年	2017
卷号	11 期号:8 页码:4815-4823
中文摘要	化学固定是重金属污染土壤修复及改良技术之一。通过盆栽实验,研究了水稻秸秆炭及其与石灰、磷酸盐组合改良剂对石漠化土壤-玉米体系中As、Zn和Pb 3种重金属迁移的影响,分析了玉米及土壤重金属含量、形态变化。结果表明,几种改良剂均显著促进了玉米生长,地上部分生物量:水稻秸秆炭>石灰+水稻秸秆炭>石灰>秸秆>磷酸盐+水稻秸秆炭>磷酸盐>对照。水稻秸秆炭、石灰及其组合均能够提高土壤pH值,抑制重金属向玉米地上部分迁移。添加改良剂后土壤中As的弱酸提取态和可还原态含量显著降低,均小于3 mg·kg~(-1)。水稻秸秆炭、秸秆与石灰及其组合均能够降低土壤中重金属提取态和还原态量,能够降低玉米籽粒中重金属的含量,但玉米籽实中Pb依然超标。
英文摘要	Chemical fixation is one of remediation techniques for heavy metal contaminated soils. This potted experiment was designed to examine and evaluate the effects of straw biochar and its combined amendments (lime and phosphate) on heavy metals (Pb, Zn and As) content and speciation in soil, soil chemical properties, corn growth and heavy metals accumulation in corn. The results showed that three amendments (lime, straw, straw biochar) could promote corn growth, and increase the total dry weight of shoots and roots. Aboveground biomass in descending order of biochar>lime+biochar>lime>straw>phosphate+biochar>phosphate>control. Biochar, lime and their combinations could increase soil pH value and inhibit heavy metal migration to the corn. Weak acid extractable and reducible As of content significantly reduce in soil after adding amendments, and the concentrations<3 mg·kg~(-1). Biochar and their combinations with lime and straw could decline extractable and reductive heavy metals in soil, and also could decrease metal content in corn seeds, but Pb concentrations were higher than significantly exceed food safety standards. Though soil amendments could decrease the accumulation of heavy metals in seeds, improve corn growth and development, moderate degree of heavy metal contaminated soil unsuitable for planting corn.
中文关键词	水稻秸秆炭 ; 改良剂 ; 玉米 ; 土壤污染 ; 重金属迁移
英文关键词	biochar amendment corn soil pollution heavy metals translocation
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:6052713
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/236177
作者单位	1.桂林理工大学, 广西环境污染控制理论与技术重点实验室, 桂林, 广西 541004, 中国; 2.桂林理工大学, 广西环境污染控制理论与技术重点实验室;;广西岩溶地区水污染控制与用水安全保障协同创新中心, 桂林, 广西 541004, 中国
推荐引用方式 GB/T 7714	孔玮琳,叶丽丽,李顺安,等. 水稻秸秆炭及组合改良剂对石漠化地区土壤-玉米系统中重金属迁移特征影响[J],2017,11(8):4815-4823.
APA	孔玮琳,叶丽丽,李顺安,袁贤斌,&蒋金平.(2017).水稻秸秆炭及组合改良剂对石漠化地区土壤-玉米系统中重金属迁移特征影响.环境工程学报,11(8),4815-4823.
MLA	孔玮琳,et al."水稻秸秆炭及组合改良剂对石漠化地区土壤-玉米系统中重金属迁移特征影响".环境工程学报 11.8(2017):4815-4823.