Effects of Boron Application on Growth and Quality of Flue-cured Tobacco NC297 under Different Potassium Supply Levels

In order to provide reference for high quality tobacco producion,this experiment adopted a randomized block design in a field plot,and analyzed the effects of boron fertilizer on the growth,development on comprehensive quality of flue-cured tobacco by using mathematical statistics methods such as multiple comparison with NC297 as test material.The results showed that:spraying boron fertilizer on flue-cured tobacco leaves can promote the growth of flue-cured tobacco NC297 to a certain extent,effectively reduce the total particulate matter and tar content of tobacco,and play a positive role in regulating the total sugar,reducing sugar,nicotine and potassium content of flue-cured tobacco;the comprehensive quality of NC297 was the best when boron was applied at medium potassium level(K2B1).

不同施氮量对烤烟NC297产质量的影响

为探明不同的施氮水平对烤烟新引进品种NC297生长发育、产量及质量的影响,对NC297进行不同梯度的施氮量田间试验。结果表明:增加或减少氮肥用量对NC297的生长影响明显;各处理中,比常规施氮量降低10%(121kg/hm^2)的处理烟株在整个生育期长势良好,成熟落黄正常,内在化学成分较为协调,有利于提高烟叶的整体质量水平。