施肥措施对水稻吸收^(137)Cs的影响  

EFFECT OF APPLYING MEASURES OF FERTILIZER ON 137 Cs ABSORPTION BY RICE

作　　者：朱永懿[1] 杨俊诚[1] 陈景坚[1] 刘学莲[1] 

机构地区：[1]中国农业科学院原子能利用研究所

出　　处：《核农学报》1998年第2期95-100,共6页Journal of Nuclear Agricultural Sciences

摘　　要：研究了施用石灰、褐煤和钾肥等对减少１３７Ｃｓ在水稻植株中积累的影响。结果表明，施用相当于土壤阳离子代换量１／２０的钾盐，使水稻对１３７Ｃｓ的积累比对照组减少３２％以上，随时间变化，这种效应更加显著。在第２茬水稻试验中（１３７Ｃｓ污染后５７ｄ）施钾盐处理组水稻中１３７Ｃｓ的积累比对照组减少７６％以上，分析结果表明，施用钾盐后，土壤中代换性１３７Ｃｓ的含量比对照组低得多，差异十分显著。９９％以上的１３７Ｃｓ被土壤固定，难以被水稻吸收。本试验的两组施用量相比，低量组比高量组效果更好。The effect of various applying measures with different fertilizer on the absorption of 137 Cs by rice was studied.The results show that the absorption of 137 Cs by rice decreased by 32% compared with control when potassium salt was applied as 1/20 of the exchangeable cations of soil. 137 Cs accumulated in rice seedling decreased more than 76% compared with control after 57 days of 137 Cs contamination.The analytical results illustrated that the exchangeable 137 Cs in soil was lower than that of control when the potassium salt was applied.More than 99% of 137 Cs is bounded to the soil,therefore,it is hard for the rice to absorb 137 Cs from soil.The effect of treatment with low content of potassium salt is better than that of the treatment with the higher one.

关 键 词：^137CS 水稻 吸收 施肥措施 

分 类 号：S511.062[农业科学—作物学]