钼肥与锌肥配施对烤烟上部叶内在品质的影响

发布时间:2019-08-23 来源: 幽默笑话 点击:


  摘要 通过田间试验,研究了于烤烟打顶当天进行钼、锌单独及混合叶面喷施对烤烟上部叶开片、内在化学成分和中性致香物质含量的影响。结果表明,叶面喷施钼或锌能有效促进上部叶的生长,叶面积显著高于清水对照;叶面喷施钼或锌能显著提高烤后上部叶的叶长、叶宽、叶质重、填充值和抗张力,降低含梗率;叶面喷施钼或锌不同程度地提高上部叶两糖、总氮和钾含量,增大糖碱比、钾氯比,降低烟叶烟碱和氯含量,有效改善烟叶化学成分的协调性;喷施钼或锌可显著增加上部叶中性致香物质总量、各类致香物质含量;钼和锌混合喷施的上部叶叶面积、化学成分协调性和中性致香物质总量均高于钼或锌的单独施用,对烤烟上部叶开片、物理性状、内在品质的改善作用效果最佳。
  关键词 烤烟;钼肥;锌肥;上部叶;叶面积;物理性状;化学成分;中性致香物质
  中图分类号 S572;S143.7+2;S147.5 文献标识码 A 文章编号 1007-5739(2017)22-0001-03
  Effects of Mo and Zn Nutrition on the Quality of Upper Leaves in Flue-cured Tobacco
  ZHAO Jia-jia 1 REN Zhi-guang 2 * YANG Li-jun 1 XU Xiao-jing 1 ZHANG Sen 1 FANG Xiu 2 HUANG Hai-tang 1
  Abstract A field experiment was conducted to study the effect of Mo or Zn alone and mixed foliar sprayingon the leaf opening,internal chemical composition and neutral aroma content of upper leaves in flue-cured tobacco. The results showed that spraying of Mo or Zn could promote the growth of the upper leaves and the leaf area was significantly higher than that of the control.Spraying Mo or Zn could significantly improve the leaf length,leaf width,leaf weight,filling value and anti-tension of the upper leaves after baking. Spraying Mo or Zn could increase the content of total sugar,total nitrogen and potassium in the upper leaves,increase the ratio of sugar to nicotine,potassium to chlorine,reduce the nicotine and chlorine content of tobacco leaves,and improve the coordination of chemical composition of tobacco leaves;Spraying Mo or Zn could significantly increase the total amount of neutral fragrant substances in the upper leaves and all kinds of fragrant substances;Mixed spraying of Mo or Zn was higher than the separate spraying of Mo or Zn,and the effect of improving the quality of the upper leaves of flue-cured tobacco was the best.
  Key words tobacco;Mo nutrition;Zn nutrition;upper leaf;leaf area;physical properties;chemical composition;neutral aroma substance
  煙草是以收获烟叶为主的经济作物,在生产中经常用叶面喷施的方式补充烟叶营养物质。钼是作物营养平衡需求中所必需的微量元素,对烟叶的生长发育和内在品质有重要影响[1-3]。
  李章海等[4]研究表明,施钼能明显提高烟株生长过程烟叶的光合作用,使烟叶钾含量提高,改善其化学成分协调性。武 丽等[5]研究表明,施钼可显著增加烟叶的产量和产值,调节各部位烟叶烟碱积累,增加烟叶大部分香气成分,使烟叶化学品质和香气品质显著提高。
  另外,锌同样作为作物生长所必需的营养微量元素,具有多种生物特性,可参与生长素的合成,催化体内氧化还原反应,提高叶片的光合速率等,进而促进作物的生长和品质生成[6-8]。黄学跃等[9]研究表明,锌能增加烟叶的香气质和香气量,明显改善其香吃味,提高烟叶品质。
  已有较多研究报道钼肥和锌肥在农业生产中的应用,但两者互作配施的应用效果还鲜有报道,本文通过研究叶面分别喷施钼肥、锌肥和两者混合喷施对烤烟上部叶叶面积、化学成分和中性致香物质含量的影响,探讨钼锌配施的应用效果,以期提高烤烟上部叶品质和可用性提供参考依据。
  1 材料与方法
  1.1 试验概况
  试验于2016年在驻马店市盘古乡张岗村进行。供试土壤为黄壤土,基础土壤养分情况为有机质9.13 g/kg、pH值6.26、碱解氮63.5 mg/kg、速效磷13.6 mg/kg、速效钾160.8 mg/kg。供试烤烟品种为当地主栽品种云烟87。

相关热词搜索:烤烟 内在 品质 影响 锌肥配施

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