【摘要】 采用同位素示踪技术研究了不同引入方式对放射性锶在水稻植株中积累的影响。采用喷雾、沉降和浇灌方式子水稻不同生长期引入等量的（８９）￣Ｓｒ。结果表明，喷雾和沉降处理，（８９）￣Ｓｒ在水稻、藉田水及土壤中的浓度随时间延长而降低，可用单项指数描述；由浇灌引入，（８９）￣Ｓｒ在水稻、稻田水及土壤中的浓度变化比较复杂，浓度与时间关系应用多项指数描述。该３种处理，（８９）￣Ｓｒ浓度在土壤中的分布规律相同，即与土壤深度呈单指数负相关。糙米对（８９）￣Ｓｒ的浓集系数皆为（ＣＦ）ｗ＞（ＣＦ）ｓ。更多还原

【Abstract】 Theisotope tracer technique was used to explore the effect of introduction method on accumulatlon of radioactive strontium in the rice plant. the results showed thatconcentration of 89Sr decreased witn time in the rice plant,paddy water and paddy soil for spray and fall treatments.It showes an individual exponential function .For irrigation treat-ment,change of concentration of 89Sr in the rice plant ,paddy water and paddy soil was more complicated. The relationship of concentrafion and time was deseribed as multinomial expo-nential function .The concentration distribution of 89Sr in the paddy soil was identical amongthtee treatments and showed an indivldul exponential dlclining with depth. CF value of 89Srwas CF water>CFsofl for each treatment.更多还原