烟草科技2019，Vol.52Issue(12)：10-16,7.
基于 15N同位素示踪技术的烤烟品种上部叶氮积累和氨挥发量差异分析
15N isotope tracing analysis of nitrogen accumulation and ammonia volatilization in upper leaves of flue-cured tobacco varieties
摘要
Abstract
In order to investigate the different utilization of soil nitrogen sources in fertilizer by upper leaves of flue-cured tobacco varieties in tobacco planting areas in southeast Guizhou,the nitrogen accumulation and ammonia volatilization in the upper leaves of cv. Yunyan89 and cv. K326 were measured using 15NH415NO3 fertilizer (base fertilizer,70% ) and K15NO3 fertilizer (top dressing fertilizer,30% ),both labeled with 15N isotope. The results indicated that the nitrogen content in the upper leaves of the two varieties increased at first and then decreased during growing,and the proportion of the nitrogen absorbed from soil in the total nitrogen content increased gradually. The contribution of nitrogen absorbed from soil to the nitrogen nutrition needed by the upper leaves was enhanced. The ammonia volatilization from the upper leaves of cv. Yunyan87 was higher than that of cv. K326,and the nitrogen source of ammonia volatilization in the upper leaves of the two varieties was mainly from the nitrogen in fertilizer. It is concluded that the soil nitrogen played a decisive role in the nitrogen nutrition of the upper leaves and the utilization of the upper leaves to the nitrogen in soil and nitrogen in fertilizer differed between the tobacco varieties.关键词
烤烟/上部叶/土壤氮/肥料氮/15N同位素/氨挥发Key words
Flue-cured tobacco/Upper leaf/Nitrogen in soil/Nitrogen in fertilizer/15N isotope/Ammonia volatilization分类
农业科技引用本文复制引用
徐清泉,杨铁钊,邹光进,刘化冰,尚晓颍,程昌合,张晓兵,夏琛,张勇刚,金慧清,徐世晓..基于 15N同位素示踪技术的烤烟品种上部叶氮积累和氨挥发量差异分析[J].烟草科技,2019,52(12):10-16,7.基金项目
浙江中烟工业有限责任公司科技项目"高香气特色品种烟叶规模开发与工业应用研究"(ZJZY2016B001). （ZJZY2016B001）
