降雨量对云南相似海拔烤烟烟碱·总氮含量及施木克值的影响

Effects of Precipitation on Nicotine,Total Nitrogen and Shmuck Value of Flue-cured Tobacco in Similar Altitude of Yunnan

[目的]研究降雨量对云南相似海拔地区烤烟烟碱和总氮含量及施木克值的影响。[方法]在6个海拔相似且大田期降雨量不同的烤烟种植点,采用相对规范的栽培和烘烤技术,对相同品种K326分部位挂牌,取初烤烟叶样品,分析烟碱含量、总氮含量及施木克值与降雨量的相关性。[结果]降雨量与烤烟烟碱含量、总氮含量和施木克值三者存在明显的负相关关系。在样本中,相对合理的施木克平衡比值出现在152～210 mm降水范围,降雨量递增导致的辐射量递减,可能引起辐射诱导烟碱合成作用减弱。关于与以上降雨量范围相似的烤烟种植区是否为优质烤烟产区这一推测,值得进一步进行系统研究。[结论]该研究可为烤烟种植区划和卷烟叶合理配置工作提供相关依据。

[Objective] The aim was to study the effects of precipitation on nicotine,total nitrogen and Shmuck value of flue-cured tobacco in similar altitude of Yunnan.[Method] Choosing the same variety K326 and sampling in six flue-cured tobacco planting sites which had similar altitude,standardized cultivation and baking techniques and different precipitation during field period.Correlation analysis on nicotine,total nitrogen,Shmuck value with precipitation were carried out.[Result] The results showed that there was an obviously negative correlation between precipitation and three indices.With increase of precipitation,radiation decreased,which might cause nicotine synthesis function abated.In the sample,precipitation range of reasonable Shmuck value was 152-210 mm.Increased rainfall led to decreasing the amount of radiation might cause radiation-induced nicotine decreased.Planting areas with similar precipitation might be high quality flue-cured tobacco regions,which was worth a further study.[Conclusion] The study can provide correlative basis for flue-cured tobacco planting division and rational allocation for tobacco leaves.