| 放射性锆在小麦生态系统中的迁移和消长动态 |
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| 引用本文： | 刘立丽,华跃进,赵希岳,史建君.放射性锆在小麦生态系统中的迁移和消长动态[J].核农学报,2008,22(4):495-498. |
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| 作者姓名： | 刘立丽 华跃进 赵希岳 史建君 |
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| 作者单位： | 浙江理工大学生命科学院生物化学所,浙江,杭州,310018;浙江大学原子核农业科学研究所,浙江,杭州,310029;江苏工业学院生物工程实验室,江苏,常州,213164 |
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| 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。
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| 关 键 词： | 95Zr 小麦 消长动态 非线性回归 |
| 收稿时间： | 2009-12-31 |
| 修稿时间： | 2009-12-31 |
ACCUMULATION AND TRANSFER OF ~(95)Zr IN WHEAT/SOIL ECOSYSTEM |
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| LIU Lili,HUA Yue-jin,ZHAO Xi-yue,SHI Jian-jun.ACCUMULATION AND TRANSFER OF ~(95)Zr IN WHEAT/SOIL ECOSYSTEM[J].Acta Agriculturae Nucleatae Sinica,2008,22(4):495-498. |
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| Authors: | LIU Lili HUA Yue-jin ZHAO Xi-yue SHI Jian-jun |
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| Abstract: | 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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| Keywords: | 95Zr |
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