当前位置: 首页 > 文章 > 放射性锆在小麦生态系统中的迁移和消长动态 核农学报 2008,22 (4) 111-114
Position: Home > Articles > ACCUMULATION AND TRANSFER OF ~(95)Zr IN WHEAT/SOIL ECOSYSTEM Journal of Nuclear Agricultural Sciences 2008,22 (4) 111-114

放射性锆在小麦生态系统中的迁移和消长动态

作  者:
刘立丽;华跃进;赵希岳;史建君
单  位:
浙江理工大学生命科学院生物化学所;浙江大学原子核农业科学研究所;江苏工业学院生物工程实验室
关键词:
95Zr;小麦;消长动态;非线性回归
摘  要:
采用同位素示踪技术,模拟降雨,研究了污染物95Zr在小麦-土壤系统中的迁移、消长和分配动态。结果显示:95Zr由小麦地上部进入系统后,随即在系统中发生迁移,茎叶、颖壳和根系中95Zr的比活度均较高,但麦粒中接近于本底水平。土壤中95Zr比活度随时间累积逐渐升高,主要滞留在表层(0~6cm),为总土壤含量的97%以上,表明95Zr被表层土壤吸附,不易随水流向下迁移。经分析表明非线性回归方程较好地反应了95Zr在小麦-土壤系统中的消长动态。
译  名:
ACCUMULATION AND TRANSFER OF ~(95)Zr IN WHEAT/SOIL ECOSYSTEM
作  者:
LIU Li-li~1 HUA Yue-jin~2 ZHAO Xi-yue~3 SHI Jian-jun~1(1.Institute of Biochemistry,College of Life Sciences,Zhejiang Sci-Tech University,Hangzhou,Zhejiang 310018;2.Institute of Nuclear-Agricultural Science,Zhejiang University,Hangzhou,Zhejiang 310029;3.Chemical Engineering Department,Jiangsu Polytechnic University,Changzhou,Jiangsu 213016)
关键词:
~(95)Zr;wheat;accumulation and transfer;nonlinear regression
摘  要:
In this study,isotope tracer technique was used to study the accumulation and transfer of( ~(95)Zr) in a simulated wheat/soil system.The results showed that( ~(95)Zr) was mainly accumulated in straw,husk and root.The concentration of( ~(95)Zr) in food stuff-kernel was relatively lower,which was only slightly higher than the level of background activity.( ~(95)Zr) in soil mainly deposited in surface layer soil(0~6cm)(97%).The dynamics of( ~(95)Zr) concentration in wheat and soil was also confirmed by application of nonlinear regression method.

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