摘要
为研究驳枝方式及追施氮肥用量对烤烟主脉化学成分的影响并确定驳枝后适宜的施氮量,通过田间试验对K326的早花烟株进行处理。结果显示,成熟期高位驳枝主脉叶绿素含量低,更易落黄成熟;低位驳枝各追氮处理降低中、上部叶主脉中烟碱及淀粉含量。建议当地采用追施氮量15 kg/hm2,以降低生产成本,提高烟叶品质和安全性。
A field experiment was carded out with early flowering K326 plants to study the effects of different branching-after-topping treatments and various dressing rates of nitrogen on chemical components of flue-cured tobacco midribs, and determine the optimum nitrogen dressing rate. The results showed that branching at higher leaf position in maturity stage might result in lower level of chlorophyll in midribs, and much easier yellowing of tobacco leaves. While branching at lower leaf position with different nitrogen dressing level could reduce the contents of nicotine and starch in midribs of middle and upper leaves. The nitrogen dressing level of 15 kg / ha is recommented to meet the requirement of reducing production costs and improving tobacco leaf quality and safety.
出处
《中国烟草科学》
CSCD
2008年第3期53-56,59,共5页
Chinese Tobacco Science
基金
广东省烟草专卖局(公司)资助项目(粤烟科200301粤烟科200403)
关键词
烤烟
主脉
驳枝
追施
氮肥用量
化学成分
flue-cured tobacco
main vein
branching-after-topping
dressing
nitrogen rate
chemical component
