种植密度和施钾量对烤烟化学成分和香气物质含量的影响

以吉烟9号为试材,采用密度和施钾量2因素裂区设计,研究了种植密度和施钾量对烤烟化学成分及香气物质含量的影响.结果表明,1)随着种植密度的增加,总糖含量升高,总氮、烟碱、蛋白质、氯含量均降低,钾含量先升后降.随着施钾量的增加,总氮、烟碱、蛋白质、钾含量均升高,而总糖和氯含量均降低；2)种植密度和施钾量及其两者互作对香气物质总量均有极显著影响.香气物质总量随着种植密度的增大而增大,以16 500株/hm2处理最高,随着施钾量的增大则先降后升,以328.5 kg/hm2处理最高；3)综合分析认为,种植密度15 100株/hm2和施钾量328.5 kg/hm2组合群体结构较为合理,其烟叶化学成分较协调,香气量较高,烟叶品质较优.

Effects of plant population and K application level on chemical components and aroma substances in flue cured tobacco

The flue-cured tobacco variety Jiyan No.9 was selected to study the effect of different plant populations and K application on chemical components and aroma substances of flue-cured tobacco by a field split block experiment design.Results showed that:1)With the increase of plant population,the content of total sugar was increased,but contents of the total nitrogen,the protein,the nicotine and the chlorine ware decreased,the potassium content showed an earlier raised and later decreased state;and with the in...