摘要
采用不同方式将（８９）Ｓｒ引入茶树－土壤系统．结果表明，由茶树地上部引入的（８９）Ｓｒ在茶树叶中的浓度比由土壤引入的高得多；在同一引入处理中，老叶中的（８９）Ｓｒ浓度要比嫩梢高．（８９）Ｓｒ在不同方法引入处理的茶树叶中的消长规律不同：由地上部引入（８９）Ｓｒ的，其在老叶、嫩梢中的浓度随时间延长而减少；由土壤引入的，嫩梢中的（８９）Ｓｒ浓度起初随时间延长而增高，在达到某一值后便缓慢降低，而老叶中的（８９）Ｓｒ浓度起初增加较快，一定时间后便逐渐趋缓并达一饱和值。还确定了嫩梢、老叶对（８９）Ｓｒ的ＣＦ（浓集系数）值．
The 89Sr was added to the teatree-soil system by different ways. The 89Sr in to the system through the over-ground part of teatree,was much more than that through soil. The 89Sr concentration in older leaves was higher than in shoot for a definite treatment. The accumulation elimination law of 89Sr in leaves varied with the treatments. For the treatment througn the over-ground part,the 89Sr concentration in older leaves and shoot was monotonously decreased with time increasing. But for the treatment through soil the 89Sr concentration in shoot was increased to reach a peak value, and then decreased slowly; while the 89Sr concentration in older leaves increased quickly in a period, then increased slowly to attain a saturated value.In addition, the concentration factor of 89Sr in older leaves and shoot were determined.
出处
《核技术》
CAS
CSCD
北大核心
1995年第3期188-192,共5页
Nuclear Techniques
