施肥和翻耕措施对减少水稻吸收^(137)Cs的效应  

EFFECT OF FERTILIZER APPLICATION AND DEEP ROOTING MEASURES ON THE ABSORPTION OF 137 Cs BY RICE

作　　者：朱永懿[1] 杨俊诚[1] 陈景坚[1] 刘学莲[1] 徐寅良[2] 孙志明[2] 

机构地区：[1]中国农业科学院原子能所 [2]浙江农业大学核农所

出　　处：《核农学报》1998年第3期165-170,共6页Journal of Nuclear Agricultural Sciences

摘　　要：应用盆栽试验和模拟小区试验相结合，研究增施磷肥和钾肥、土壤翻耕后对减少水稻植株（尤其是稻谷）中１３７Ｃｓ积累的效应。结果表明，增施钾肥可以使土壤中代换性１３７Ｃｓ活度明显降低，从而有效地减少水稻植株中１３７Ｃｓ的积累，施用量按每公顷９２２５ｋｇ硫酸钾表现最好。增施磷肥的作用表现不稳定，施用量较低时表现为水稻植株中１３７Ｃｓ积累量减少，但磷肥施用量增高时，表现为促进作物吸收１３７Ｃｓ。翻耕土壤能够有效地降低水稻植株中１３７Ｃｓ的积累。Effects of the application of phosphorus and potassium fertilizer and deep rooting on reducing the absorption of 137 Cs by rice (especially in the seed) were estimated using pot and plot experiment. The results show that the available 137 Cs in soil decreased significantly by applying potassium fertilizer, which led to the lower accumulation of 137 Cs in rice stem and the most effective measure was to apply potassium sulphate of 922 5kg/ha . An unsteady effect with phosphate fertilizer existed. When P application was in a lower amount, the accumulation of 137 Cs in rice decreased. But following the increase of P application, the absorption of 137 Cs was promoted. The 137 Cs accumulation in rice decreased significantly by deep rooting.

关 键 词：水稻 土壤污染 施肥 翻耕措施 

分 类 号：S511.106[农业科学—作物学]