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为探究追施不同钾肥对烤烟品质性状的影响,采用田间试验与室内分析相结合的方法,以中烟100为供试材料,研究了追施不同种类钾肥对烤烟糖碱比、有机钾指数、中性致香物质含量的影响。结果表明:追施钾肥处理烟叶品质明显高于不追施钾肥处理,其中追施柠檬酸钾处理最好,常规追施钾肥+生物钾肥效果其次,常规追施钾肥+有机钾肥与常规追肥效果较差;追施柠檬酸钾处理和常规追施钾肥+生物钾肥处理均能有效协调中上部烟叶糖碱比,极显著提高各部位烟叶有机钾指数以及中部叶致香物质总量。总体看来,追施柠檬酸钾或增施生物钾肥均能较高程度提高烟叶品质,在一定程度上可以通过增施生物钾肥代替较为昂贵的柠檬酸钾以提高烟叶品质。
In order to explore the effects of topdressing different potassium fertilizers on the quality traits of flue-cured tobacco, a field experiment and an indoor analysis were used to study the effects of different types of topdressing potassium on the sugar-to-alkali ratio, organic potassium index, Influence of neutral aroma components. The results showed that the quality of tobacco topdressing potassium was significantly higher than that of non-topdressing potassium application, of which potassium citrate topdressing was the best, followed by conventional topdressing potassium and bio-potash, followed by conventional topdressing potassium and organic potassium fertilizers compared with conventional top dressing Topdressing potassium citrate treatment and conventional topdressing potash fertilizer and bio-potash fertilizer treatment all could effectively coordinate the ratio of sugar to nicotine in middle and upper tobacco leaves, and significantly increased the content of organic potassium index and the content of aroma components in middle part of tobacco leaf. In general, potassium citrate topdressing and bio-potash addition could both improve the quality of tobacco leaf to some extent, and to a certain extent improve the quality of tobacco by replacing more expensive potassium citrate with bio-potash fertilizer.