氮水平和NO_3^--N比例对烤烟新品种YH05烟叶化学成分的影响

Effect of Nitrogen Application Rate and Different Nitrogen Forms Ratio on Chemical Components of New Flue-cured Tobacco Variety YH05 Leaves

为促进烤烟新品种YH05的推广应用,采用田间小区试验,研究不同的施氮水平(5,7,9 g/株)和氮素形态比例对YH05不同部位烟叶主要化学成分的影响。结果表明,氮水平、NO3--N比例以及二者之间的交互作用对烟叶中的内在化学成分均有影响,但对不同部位叶片的影响程度有差异。氮水平对各部位叶片中的烟碱含量、总糖含量、还原糖含量以及糖碱比的影响均达差异极显著水平,说明氮水平是影响YH05碳代谢和氮代谢的重要因素,并调控碳氮的平衡;NO3--N比例以及二者之间的交互作用主要影响上部叶的氮代谢,也是中部叶和下部叶碳代谢的影响因素。由于各部位烟叶中的烟碱含量均较低,明确YH05在工业卷烟生产中,应该主要作为辅料烟使用。

To accelerate the new flue-cured tobacco variety YH05 commercial release,the effect of nitrogen application rate and different nitrogen forms ratio to chemical components of YH05 leaves was investigated by the methods of experiment in the field.The results showed that chemical components in leaves were affected by nitrogen application rate,different nitrogen forms ratio and the interaction of them.Nitrogen application rate was the main influence factor on both carbon metabolism and nitrogen metabolism,and which had extremely remarkable effect on the content of nicotine,total sugar,reducing sugar and sugar/nicotine ratio.But nitrogen forms ratio and the interaction of them affect the nitrogen metabolism of upper leaves,also affect carbon metabolism of cutters and lower leaves.According to the content of nicotine in leaves,We clearly indicated that YH05 should be used as accessories in cigarette industry.