不同海拔光照强度和光质对烟叶品质的影响

在不同海拔烟地附近安装PC-2GL光谱仪,连续采集大田生育期辐射变化,统计分析辐射变化和烤后烟叶理化指标,探讨不同海拔高度光照强度和光质的差异及对烟叶质量的影响。结果表明:海拔与太阳总辐射、直接辐射、紫外辐射呈正相关,与净辐射、光合有效辐射呈负相关。总糖、还原糖、总氮、烟碱含量与海拔呈正相关。色素和多酚含量则受辐射影响,与海拔呈负相关。

Impacts of Different Light Intensities and Qualities of Illumination at Different Altitudes on the Quality of Tobacco Leaves

To probe into the discrepancy between the light quality and intensity of illumination in different altitudes and the impact of them on the quality of tobacco leaves,spectrometers PC-2GL were fixed in different altitudes of tobacco planting fields to collect changes of radiation during growth period of tobacco,and then the changes of radiation and the physical and chemical indicators of cured tobacco leaves were statistically analyzed.The results showed that the altitude positively correlated with total solar radiation,direct radiation,ultraviolet radiation,and the contents of total sugar,reducing sugar,TN and nicotine,but negatively correlated with net radiation,photosynthetically active radiation,and the contents of pigment and polyphenol,which are subject to the effects of radiation.