尿素态氮水平对烤烟漂浮育苗中营养生长和生理特性的影响  

Effects of Urea-nitrogen Level on Nutritional Growth and Physiological Characteristics of Flue-cured Tobacco Seedlings in the Floating System

作　　者：习向银[1] 陈益银[2] 刘国顺[2] 时向东 

机构地区：[1]西南大学资源环境学院,重庆400715 [2]河南农业大学,河南郑州450002

出　　处：《华北农学报》2008年第1期128-132,共5页Acta Agriculturae Boreali-Sinica

基　　金：国家烟草专卖局项目(9901007);博士后基金项目(校100079)资助

摘　　要：2001-2002年,在河南农业大学试验站采用漂浮育苗方式研究了不同尿素态氮水平对烤烟烟苗营养生长和生理特性的影响。结果表明,尿素态氮为15%,对烤烟漂浮育苗营养生长和生理特性无不良影响。与对照相比,当尿素态氮为75%时,烟苗的生长受到明显抑制,叶片的光合特性和NR活性降低,根系吸收能力下降。The study was conducted on effects of different urea-nitrogen levels on nutritional growth and physiological characteristics of tobacco seedlings in the floating system, in the experimental station of Henan Agricultural University during 2001 - 2002. The results showed that it had no bad effects on nutritional growth and physiological characteristics of tobacco seedlings in the floating system for the treatment of 15 % urea-nitrogen. When the contents of urea-nitrogen were 75 %, tobacco seedlings growth was obviously restrained, photosynthesis and the NR activity reduced, the root absorbing ability dropped than CK.

关 键 词：烤烟 漂浮育苗 尿素态氮 生理特性 

分 类 号：S572.01[农业科学—烟草工业]