采收模式对烤烟上部叶质量的影响

目的]为了解烤烟上部烟叶可用性的影响因素.方法]采用田间试验与室内分析的方法,研究成熟期灌水、采收方式、采收成熟度等因素对上部烟叶等级结构、外观质量、常规化学成分、评吸质量及物理特性的影响.结果]烤烟上部叶成熟期的水分供应、采收方式和采收成熟度对上部烟叶可用性均有比较明显的影响,但影响程度不同,成熟水对上部烟叶质量影响最大,其次是采收方式,再次是采收成熟度.在烟叶生产实践中,采收前5～7d灌溉一次成熟水、4～6片叶一次性采收（带茎或不带茎）、适当推迟采收时间,有利于改善上部烟叶质量和可用性.结论]该研究可为提高上部烟叶可用性奠定理论基础与实践依据.

Effects of Harvest Mode on Quality of Flue-cured Tobacco Upper leaves

Objective]The aim was to understand the influence factors of flue-cured tobacco upper leaves usability.Method]The effects of mature period irrigation,harvest methods,maturity and the other factors on grade structure,appearance quality,chemical components,smoking quality and physical properties of upper leaves were studied by using the method of field experiment and laboratory analysis.Method]The effects of mature period irrigation,harvesting methods,maturity on upper leaves were significant,but the degree was different,thereinto,the mature period irrigation had the biggest effect,followed by harvest methods,again was the maturity.In the tobacco production practice,to irrigate 5-7 days before harvest,harvest 4-6 leaves once （with or without stem）,and harvest later within the possible limit will improve quality and usability of upper leaves of flue-cured tobacco.Conclusion]The study lays a theoretical and practical basis for improving the usability of upper leaves of flue-cured tobacco.