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【摘 要】
：
在盆栽烟草条件下采用15N示踪方法研究尿素改性前后N在土壤烟株中的分布规律,并比较尿素改性前后N的利用率大小.结果表明,尿素改性后比改性前烟叶增产25.16%,达1%显著水准.烟
【机 构】
：
中国科技大学经济技术学院,安徽,合肥,230052中国烟草专卖局(总公司)科教司,北京,100052;中国烟叶生产购销公司生产处,北京,100052;华中农业大学资源环境与农业化学系,湖北,武汉,43
【出 处】
：
核农学报
【发表日期】
：
2002年1期
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