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Position: Home > Articles > Effects of ~(137)Cs on spring wheat and transfer in soil-wheat systems Journal of Nuclear Agricultural Sciences 2002,16 (2) 93-97

~(137)Cs不同污染水平在大亚湾、秦山、北京土壤-植物系统的转移

作  者:
杨俊诚;朱永懿;陈景坚;潘家荣;柳青
单  位:
中国农业科学院原子能利用研究所;中国水稻研究所
关键词:
~(137)Cs;污染土壤;生态环境行为;核素转移
摘  要:
采用我国大亚湾、秦山和北京土壤,模拟核变产物~(137)Cs在0Bq/kg土、3.3*10~4Bq/kg土、3.3*10~5Bq/kg土、3.3*10~6Bq/kg土污染水平时,研究土壤-小麦系统的污染影响与~(137)Cs核素的转移规律。结果表明,在本试验条件下小麦生长发育处于正常状态,未发现对小麦有不良影响;小麦分别在3个污染水平下从试验用的3种土壤中吸收~(137)Cs的趋势是一致的;小麦植株中~(137)Cs的比活度随~(137)Cs施入量相应以数量级增加,两者间呈十分显著的正相关;~(137)Cs在土壤-小麦系统中的转移系数随土壤的性质不同而变化,在同一污染水平下转移系数在n*10~(-2)~n*10~0范围变化;在同一种土壤中,随土壤污染水平的提高,转移系数亦有所提高,但变化范围不大,对北京土转移系数为2.2*10~(-2)~5.4*10~(-2),大亚湾土转移系数1.04~2.09,均在同一数量级内变化;对秦山土转移系数为0.51~1.21。
译  名:
Effects of ~(137)Cs on spring wheat and transfer in soil-wheat systems
作  者:
杨俊诚(1);;朱永懿(1);;陈景坚(1);;潘家荣(1);;柳青(2)
单  位:
(1)中国农业科学院原子能利用研究所, 北京, 100094;;(2)中国水稻研究所, 杭州, 310006
摘  要:
The study emphasized on the effects of ~(137)Cs on spring wheat and transfer factors in soil-wheat systems. The results show that the spring wheat grown normally under the experimental conditions and no adverse effects appeared; the absorption trends of ~(137)Cs y spring wheat were in the order of Dayawan soil > Qinshan soil > Beijing soil; the specific radioactivity of ~(137)Cs in wheat increased in the magnitude order varying with the radioactivity of ~(137)Cs applied in the soils and the relationship was significant difference in positive; the transfer factor (TF) of ~(137)Cs in the soil-plant systems varied with the characteristic of soil and the range was within n * 10~(-2) ~ n * 10~0 in the same activity of contamination; in the same soil-plant system the TF value increased varying with the radioactivity of ~(137)Cs contamination in the range of 2.2 * 10~(-2)~5.4 * 10~(-2) for Beijing soilplant system, 1.04 ~ 2.09 for Dayawan soil-plant system and 0.51 ~ 1.21 for Qinshan soil-plant system.

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