摘要
应用盆栽和模拟小区连续３年就施用硫酸钾、碳酸钾、氯化钾对降低１３７Ｃｓ从土壤农作物转移率的效果进行试验。结果表明，３种钾盐可以大大降低植株中的１３７Ｃｓ的污染，其中硫酸钾的效果最好，第２年第３年的后效表现非常稳定。钾盐的最适施用量以土壤阳离子代换量的１／３０为宜。施用钾盐主要是有效地降低了土壤中代换性１３７Ｃｓ的含量，从而降低了１３７Ｃｓ从土壤农作物的转移率。
A study on reducing the transfer of
137Cs from soil to plant was conducted by pot and plot experiment using potassium sulfate,
carbonate and chloride. The result showed that all of the three kinds of potassium salts could
reduce the transfer of 137Cs in soilplant system, of which the potassium sulfate performed best
and had a stable later effects in the second and third year. The available amount of potassium
salt to apply was explored and it was found that 1/30 of soil available cation was suitable. The
mechanism could be explained as that the available 137Cs in soil was reduced effectively by
the application of potassium salt so that the transfer of 137Cs in soilplant system decreased
significantly.
出处
《核农学报》
CAS
CSCD
1999年第4期242-247,共6页
Journal of Nuclear Agricultural Sciences
关键词
钾盐
小麦
水稻
土壤
^137CS
转移
Potassium salt, 137Cs, wheat, rice, transfer coefficient
