钾肥基施与叶面喷施对烤烟含钾量的影响

用盆栽试验分别研究基施、叶面喷施和两者配合施钾肥3种方式,在不同施钾水平对烟叶钾、总糖和烟碱含量等品质指标的影响。结果表明,提高基肥施钾量会提高烟叶含钾量,降低烟叶中烟碱、总氮含量,增加还原糖、总糖含量;叶面喷施钾肥会降低烟叶中叶绿素含量,降低基施中、低钾烟叶的烟碱与总氮含量,均衡各层烟叶含钾量,优化烟叶中各种成分配比,提高烟叶品质。叶面喷施钾肥与基施钾肥综合影响烟叶中各种化学成分的含量。单独提高基肥施钾量并不能使烟叶含钾量持续显著提高,基施与叶面喷施配合施钾肥,对提高烟叶综合品质效果较好。

Effect of Basal and Foliar Applications of Potassium Fertilizer on Flue cured Tobacco Leaves

The study was to evaluate the effect of different applications of potassium fertilizer on the quality of flue-cured tobacco leaves through pot experiment.The results showed that basal potassium fertilizer increased the contents of potassium content,reducible sugar,and total sugar in tobacco leaves,and decreased the contents of nicotine and total nitrogen.Foliar application of potassium fertilizer reduced the chlorophyll content of tobacco leaves,as well as the contents of nicotine and total nitrogen in the ...