首页 | 本学科首页   官方微博 | 高级检索  
   检索      

改性措施对复合污染土壤重金属行为影响的研究
引用本文:王新,吴燕玉.改性措施对复合污染土壤重金属行为影响的研究[J].应用生态学报,1995,6(4):440-444.
作者姓名:王新  吴燕玉
作者单位:中国科学院沈阳应用生态研究所陆地生态系统痕量物质生态过程开放实验室
基金项目:中国科学院台站网络资助,中国科学院陆地生态系统痕量物质生态过程开放实验室基金
摘    要:采用田间实验的方法,研究了在复合污染土壤上石灰+Ca、Mg、P肥处理对重金属迁移、积累的影响及重金属的作物效应.结果表明,在污染土壤上采用石灰+Ca、Mg、P肥处理可减少重金属向作物籽实的迁移和积累,特别是Cd、Ph、As3元素;改性以后,水稻、小麦Cd吸收量比改性前降低了31.5—55%.4种作物对Ph的吸收量降低了23.4-57.8%,Cu、Zn吸收量略有降低.水稻As吸收量增加了56.8%,小麦、大豆As吸收量减少61.8-81.1%.重金属在土壤中存在的形态发生了变化,Cd、Ph、Zn交换态百分含量不同程度地有所减少,而碳酸盐结合态有所增加,可被植物吸收利用的有效含量降低.

关 键 词:复合污染  重金属元素  土壤-植物系统  改性处理

Effect of modification treatments on behaviour of heavy metals in combined polluted soil
Wang Xin and Wu Yanyu.Effect of modification treatments on behaviour of heavy metals in combined polluted soil[J].Chinese Journal of Applied Ecology,1995,6(4):440-444.
Authors:Wang Xin and Wu Yanyu
Abstract:The effect of Ca,Mg and P fertilization on the migration and accumulation of heavy metals in combined polluted soil and the response of crops to heavy metals are studied with field tests. The results show that on polluted soil, fertilization with Ca, Mg and P can restrain the migration and accumulation of heavy metals, especially Cd, Ph and As to and in crop grains. After fertilization, the adsorption amount of Cd by rice and wheat is decreased by 31. 5-55 %. The amount of absorbed Ph in four crops is decreased by 23. 4-57. 8%, and that of Cu and Zn is slightly decreased. The absorbed As in rice is increased by 56. 8%, and that in wheat and soybean is decreased by 61. 8-81.1%. The existed forms of heavy metals in soils are changed, i. e., the percentage of exchangeable Cd, Ph and Zn is decreased, that of their carbonates is increased, and their available contents are declined.
Keywords:Combined pollution  Heavy metal elements  Soil-plant system  Modification treatment    
本文献已被 CNKI 维普 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号