氮肥施用与烤烟氮素营养关系研究-中国烟草科学.PDFVIP

38 中国烟草科学 2008 ，29 （4 ）：38-41 氮肥施用与烤烟氮素营养关系研究 1 1 2 3 3 3 李文卿 ，陈顺辉 ，曾文龙 ，江荣风 ，李春俭 ，张福锁 （1.福建省烟草农业科学研究所，福州 350003 ；2.福建省烟草公司龙岩市公司，福建 龙岩 364000 ； 3. 中国农业大学资源与环境学院，北京 100094 ） 摘 要：通过调查、营养诊断与化学分析等方法，研究了烤烟叶片硝酸盐浓度速测结果与烟株氮素营养状况之间的对应关 系。结果表明，施氮量对烤后烟叶产质量和内在化学成分中总氮和烟碱含量有较大影响；烟株大田生育期内必威体育精装版平展叶硝酸 盐浓度呈反“S”型变化，该曲线可用二元四次方程曲线拟合，相关关系极显著；不同农户烟株硝酸盐浓度下降的反“S”型曲线 在横坐标水平上出现较明显变异，纵坐标方向变异较小。必威体育精装版平展叶硝酸盐浓度与施氮量和烟叶氮素含量有较好的对应关系， 能够反映大田烟株氮素营养状况，可用于大田烟株氮素营养速测。 关键词：烤烟；氮肥；氮素营养；硝酸盐速测 中图分类号：S572.62 文献标识码：A 文章编号：1007-5119 （2008 ）04-0038-04 Relationship of Nitrogen Rates and Nitrogen Nutrition of Flue-cured Tobacco 1 1 2 3 3 3 LI Wenqing , CHEN Shunhui , ZENG Wenlong , JIANG Rongfeng , LI Chunjian , ZHANG Fushuo (1. Fujian Institute of Tobacco Agricultural Sciences, Fuzhou 350003, China; 2. Longyan Branch, Fujian Tobacco Corporation, Longyan, Fujian 364000, China; 3. College of Resources and Environmental Sciences, China Agricultural University, Beijing 100094, China) Abstract: Field investigation, nutrition diagnosis and chemical analysis were employed to study the relationship between nitrogen rates and nitrate contents in flue-cured tobacco leaves. The results showed that nitrogen rate had remarkable influence on yields and quality, and the contents of total nitrogen and nicotine of cured tobacco leaves. A reverse S model curve of nitrate content in the latest fully expanded leaves was observed, which could be simulated by duality and quartic equation with highly significant relation. The reverse “S” of nitrate contents in tobacco leaves from different fields changed evidently in abscissa, yet litt