施氮量对白肋烟生长发育及产量质量的影响

为了降低白肋烟上部叶烟碱含量偏高问题,确定适宜的施氮量,通过田间试验,研究了云南宾川白肋烟主栽品种TN90在不同施氮水平条件下白肋烟的生长发育及产、质量的变化。结果表明:不同施氮量对烟株农艺性状、烟叶产量、产值、外观品质、化学成分均有显著影响。株高、茎围、单株叶面积随施氮量的增加而上升,产值、均价和上等烟比例在适宜的施氮下表现较好。农艺性状、经济性状、品质性状综合比较,在云南宾川白肋烟产区以施氮270kg/hm2为宜。

Effects of nitrogen Amount on Growth and Development Yield and Quality in burley Tobacco

In order to reduce nicotine content in upper leaves and determine suitable application nitrogen amount,the field experiments on effects of nitrogen amount on growth and development and yield and quality of TN90 were conducted.The results showed that the plant height,stem perimeter,leaf area per plant and yield increased as the increasing of the amount of applied nitrogen.Value of product,average price,rate of top quality leaves were higher under preferential amount of nitrogen application.Agronomic character,economic character and quality character were considered comprehensively that the 270kg/hm2 nitrogen application was better.