文献类型：期刊文章

作　　者：宋玉芳[1] 许华夏[1] 任丽萍[1] 龚平[2] 周启星[1]

机构地区：[1]中国科学院沈阳应用生态研究所陆地生态过程开放实验室,沈阳110016 [2]加拿大国家研究院生物技术研究所

出　　处：《生态学杂志》

基　　金：国家自然科学基金(39700022);国家重点基础研究发展计划(973计划);污染生态化学百人计划资助项目

年　　份：2001

卷　　号：20

期　　号：3

起止页码：4-8

语　　种：中文

收录情况：AJ、BDHX、BDHX2000、BIOSISPREVIEWS、CAS、CSCD、CSCD2011_2012、GEOBASE、IC、JST、RCCSE、SCOPUS、WOS、ZGKJHX、ZR、核心刊

摘　　要：The eco toxicity of Cu,Zn,Pb and Cd in the single form on the inhibition of seed germination and root elongation of turnip was tested with four types of soils (red loam soils,meadow brown soils,chestnut soils and dark brown soils),and their combined effect was determined with meadow brown soils.Data showed that with the same content of heavy metals,the root elongation was more strongly inhibited than the seed germination,indicating that root is more sensitive to heavy metals pollution than seed germination.The inhibition rates of heavy metals on the root elongation (IRHMRE)of turnip were significantly negatively related to the contents of organic matter (OR) and Kjedahl nitrogen (K N) in soils.However,there were no significant relationship between IRHMRE and soil pH,and so does the content of T K.A slight antagonism effect in root elongation was produced when Cu,Zn,Pb and Cd were combined in the concentrations.Zn,Pb and Cd resulted in the incentive effect,while Cu gave an inhibition in the single form.Furthermore,additive effect was shown when Cu,Zn,Pb and Cd were combined in the inhibition concentrations(IC>10%)of single form.

关 键 词：土壤污染 重金属污染  萝卜种子 发芽  根伸长抑制  生态毒性

分 类 号：X173]