氮素形态对烤烟品质影响的研究

 1993～1997年在云南不同自然条件下进行不同比例的硝态氮、铵态氮试验。试验分5个处理:NO₃^--N100%,NO₃^--N75%+NH₄⁺-N25%,NO₃^--N50%+NH₄⁺-N50%,NO₃^--N25%+NH₄⁺-N75%,NH₄⁺-N100%.试验结果表明NO₃^--50%+NH₄⁺-N50%的配比适合云南的气候和土壤。此配比的烟叶香气质、香气量、烟叶含钾量均显着优于其它配比。本试验系统研究了K⁺,NH₄⁺,NO₃^-在土壤中的迁移与根系吸收和在叶片中变化积累的相关规律,揭示了NO₃^--N50%+NH₄⁺-N50%烟叶香气味最好和含钾量高的主要原因。

Effect of Different Forms of Nitrogen Fertilizer on Quality of Fluecured Tobacco

A field trial was conducted from 19931997,which was to study that the effect of different ratio of NO3N and NH4 N on the quality of fluecured tobacco under different climate area and included the treatments as 100% NO3N,75%NO3-N and 25% NH4 N. 50% NO3N and 50% NH4 N,25% NO3-N and 75% NH4 N,100% NH4 N.The results showed that the treatment of 50% NO3-N and 50% NH4 N produced the high quality tobacco leaves in Yunnan,which was with better aromo quality,higher aromo and potassium content than other treatments.The relationship between the movement of K ,NH4 and NO3 in soil and their absorb by root,the accumulation in leaves,and why the treatment of 50% and 50% produced higher quality tobacco leaves were studied.