^(137)Cs叶面污染在水稻中的转移、积累与分布  

TRANSLOCATION, ACCUMULATION AND DISTRIBUTION OF 137Cs IN RICE AFTER FOLIAGE CONTAMINATION

作　　者：范仲学[1] 

机构地区：[1]山东省农业科学院原子能农业应用研究所

出　　处：《核农学报》1998年第4期221-224,共4页Journal of Nuclear Agricultural Sciences

摘　　要：在水稻不同生育期，以１３７Ｃｓ污染主茎单个叶片，结果表明，１３７Ｃｓ向植株未污染部位的转移率与污染叶的叶位有关，１３７Ｃｓ主要分布在茎叶中。受污染的水稻各部位，１３７Ｃｓ积累量与污染量呈线性正相关，植株非污染部位１３７Ｃｓ比活度大小顺序为叶＞茎＞根＞穗。he single leaf of rice stem was artificially contaminated with 137Cs at different growth stages to study its foliage absorption and translocation. The results showed that the translocation rate of 137Cs to noncontaminated parts of the plant was related with the phyllotaxis of the contaminated leaf and the mojority of 137Cs in the plant was distributed in leaves and stems. For rice being contaminated, there was a positive linear relationship between the accumulation of  137Cs in each noncontaminated part of the plant and the amount of the contamination. The order of the specific activity of 137Cs was: Leaf>Stem>root>ear in onocontaminated parts of the plant.

关 键 词：水稻 铯137 叶面吸收 积累 分布 放射性核素 

分 类 号：S511.01[农业科学—作物学] X591[环境科学与工程—环境工程]