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作 者 ：孙志明,陈传群,王寿祥,王继延

期 刊 ：生态学报 2001年 21卷 6期 页码：938~941

关键词：钴-60；水稻；浓集系数；迁移模型；

Keywords:coblat\|60, rice, concentration factor, transference,

摘 要 ：研究了放射性钴 ( 6 0 Co)在模拟水稻田中的迁移、消长的动力学模型。结果表明 ,水稻田表水中 6 0 Co浓度随时间延长单调降低 ;水稻植株中 6 0 Co浓度在经历一最大值后下降 ,其各部位中 6 0 Co浓度大小顺序是 :稻根 >稻草 稻壳 >糙米 ;各处理土壤中 6 0 Co浓度随距表层深度按单项指数衰减 ,不同处理的土壤中 6 0 Co的平均浓度则与时间负相关。6 0 Co在田表水、土壤、水稻植株中浓度的大小顺序是 :水稻植株 >土壤 >田表水。

Abstract:The dynamic model of transference,accumulation and disappearance of active cobalt in the simulated paddy were studied.The results showed that concentration of 60 Co in paddy water was decreased monotonously with time.The concentration of 60 Co in rice plant was increased to peak a period and then declined,and the magnitude of concetration was:root>strawhusk>brown rice.The concentration of 60 Co in the soil for idendical treatments presents an individual exponential declining with...

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