云南腾冲烟区不同烤烟品种适应性试验

【目的】在云南腾冲烟区生态条件下筛选符合河北中烟工业公司品牌特色要求的原料烤烟品种，为卷烟企业原料采购与合理利用提供科学依据。【方法】以云南腾冲优质特色烟叶基地单元内主栽原料烤烟品种云87、K326和KRK26为原料，进行为期两年的品种适应性试验，对各品种烤后原烟外观及理化特性进行分析评价。【结果】KRK26烤后原烟外观质量最差，叶片油份不足，物理指标表现一般，中上部烟叶总氮含量偏低，总糖、还原糖含量偏高，表现不稳定，受环境变化影响较大；K326烤后原烟外观质量和物理性状表现适中，上部叶在总糖、还原糖、总氮、叶烟碱受气候变化影响大，表现不稳定；云87烤后原烟外观质量评分较高，物理指标总体表现较好，主要化学成分稳定，受环境变化影响较小。【结论】在云南腾冲烟区生态条件下，云87表现突出，理化性状较稳定，适应性最好，可作为河北中烟工业公司原料烤烟品种进行规模种植。

Adaptability of different flue-cured tobacco varieties in Tengchong tobacco-growing areas of Yunnan

Objective]The purpose of this study was to select the suitable flue-cured tobacco variety meeting the needs of China Tobacco Hebei Industrial Co.,Ltd.under the ecological conditions of Tengchong tobacco-growing areas in Yunan.Method]Adaptability of main flue-cured tobacco cultivars,viz.,Yun87,K326 and KRK26,planted in Tengchong Special Tobacco Base,was investigated for two years by analyzing their appearance quality and physico-chemical characteristics.Result]The variety KRK26 showed worst appearance quality,lesser oil content in leaves,average physical indices,lesser total nitrogen content in upper and middle leaves,and excessive total sugar and reducing sugar content.Further,its performance was not steady because it was easily influenced by changes in environmental conditions.The variety K326 exhibited average quality and physical traits.Its total sugar,reducing sugar,total nitrogen and nicotine content differed in different environment conditions.Variety Yun87 was found to be least affected by the changes in environmental conditions.It showed best quality and physical indices and stable chemical components.Conclusion]Yun87 was suitable for planting under the ecological conditions of Tengchong tobacco-growing areas due to its outstanding performance and steady physico-chemical traits.