稀土对碳酸氢铵增效作用的研究  

INCREMENTAL EFFECT OF RARE EARTH\|AMMONIUM BICARBONATE

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,北京100094

出　　处：《核农学报》2000年第3期163-166,共4页Journal of Nuclear Agricultural Sciences

基　　金：国家科委"九五"重点科技项目

摘　　要：应用15N示踪法研究稀土与碳铵混配的情况下稀土对碳铵氮素的增效作用。结果表明 ,稀土碳铵促进了作物根系生长 ,使根的干物重比不添加稀土的对照提高7 3 4%～ 2 7 8% ,产量提高 4 1 7%～ 6 3 0 %。在谷子和小麦试验中 ,稀土碳铵中的氮素利用率分别比对照提高 8 84%和 5 2 4% ,差异达到显著水平。表明稀土与碳铵混配施用时 。The incremental effect of rare earth ammonium bicarbonate was investigated by 15 N trace technique.The results showed that since the rare earth\|ammonium bicarbonate promoted the growth of plant roots,the dry weight of root increased by 7\^34%～27\^8% over the control and output increased by 4\^17%～6\^30%.The utilization rate of nitrogen increased by 8\^84%～5\^24% over that of control in the experiment with wheat and millet and the differences were significant.The results indicate that the rare earth elements promote the utilization of nitrogen in ammonium bicarbonate when they are applied in the appropriate composition.

关 键 词：稀土 农业应用 碳铵 ^15N示踪 复混肥 

分 类 号：S143[农业科学—肥料学]