含磷化肥的α和β比放活性及其对农业土壤的影响  

The Radioactivities of α and β Rays in Phosphate Fertilizers and Their Effects on Agricultural Soil.

作　　者：王少仁[1] 夏培桢[1] 

机构地区：[1]中国农业科学院土肥所,北京100081

出　　处：《农业环境保护》1991年第6期241-243,259,共4页Agro-Environmental Protection

摘　　要：本文对含磷化肥的α、β比放活性进行了研究。进口磷肥的比放活性比国产磷肥强。不同含磷化肥施入土壤后对土壤比放活性影响不同。一次大量施用并未造成土壤的放射性污染。研究表明土壤有机质与α、β比放活性呈负相关,说明有机质对α、β放射性具有屏蔽作用。This paper deals with the radioactivities of a andβ rays in phosphate fertilizers. The research shows that the radiation intensity of foreign phosphate fertilizer is higher than that of domestic one. Different fertilizers applied in soil have different effects on the radioactivities of soils.It can not cause soil radioactive contamination when large amount of phosphate fertilizer is applied in soils. The contents of soil as organic matter is negatively correlated with the radioactivities of a and β rays, indicating that organic matter also has the capacity to shield the isotopic radiation.

关 键 词：磷脂 比放活性 土壤 有机质 

分 类 号：S143.2[农业科学—肥料学] S153[农业科学—农业基础科学]