钾肥基施与叶面喷施对烤烟含钾量的影响  

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

作　　者：胡文智[1] 王晴[1] 苗慧莹[1] 余世洲[1] 王胜男[1] 廖允成[1] 

机构地区：[1]西北农林科技大学农学院,陕西杨凌712100

出　　处：《西北农业学报》2010年第9期119-123,共5页Acta Agriculturae Boreali-occidentalis Sinica

基　　金：中国烟草总公司陕西省公司科学研究与技术开发项目重大专项(ZDKJ-01-2008);西北农林科技大学创新性试验计划重点支持项目(2008-01-01)

摘　　要：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。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 treatments of middle-and high-level basal potassium fertilizer.Besides,the quality of tobacco leaves was improved by balanced potassium content of different layer leaves and optimized components of flue-cured tobacco leaves.Both foliar and basal application of potassium fertilizer influenced the various chemical components of tobacco leaves.The experiment proved that applying the basal potassium fertilizer alone did not make significant increase of potassium content in tobacco leaves.However,combination application of basal and foliar potassium fertilizer improved the comprehensive quality of tobacco obviously,of which,the treatment of middle level of basal potassium fertilizer combined with 0.2 mol/L potassium（1/2K2SO4） foliar application produced the best results.

关 键 词：烤烟 钾肥 含钾量 叶面喷施 

分 类 号：S572[农业科学—烟草工业]