论文部分内容阅读
以K326为材料,设置了2种施氮量和3种留叶数,研究了施氮量和留叶数对K326株型、光合及产质量的影响.结果表明:在同一施氮量下,留叶15片为低台到高台,留叶19和23片为低台到长筒.留叶19和23片的烟株在生物学性状、光合指标上综合比较优于15片留叶烟株,烤后烟叶总氮、烟碱、钾质量分数随留叶数的增加而递减,而随总糖质量分数和产值量的增加,则先增后降;在同一留叶数下,烟株生物学性状和光合指标以及钾、氯、总氮、烟碱质量分数、产值量都随着施氮量的增加而升高,而总糖质量分数随之下降.综合分析认为,19片留叶和120kg/hm2施氮处理在农艺性状、光合特性以及产质量上表现最好.
With K326 as material, two kinds of nitrogen application rate and three kinds of leaf retention number were set up, and the effects of nitrogen application rate and leaf number on K326 plant type, photosynthesis and yield and quality were studied.The results showed that under the same nitrogen application rate, Leaves 15 leaves for the low platform to the high platform leaves 19 and 23 for the low platform to the long cylinder leaves 19 and 23 tobacco leaves in the biological properties, photosynthetic indicators of the comprehensive better than the leaves of 15 leaves , The content of total nitrogen, nicotine and potassium of tobacco leaves decreased with the increase of the number of remaining leaves after roasting, but increased with the increase of total sugar content and output value at first; The traits and photosynthetic indexes, potassium, chloride, total nitrogen and nicotine contents and the amount of output all increased with the increase of nitrogen application rate, while the total sugar content decreased.A comprehensive analysis showed that 19 leaves and The nitrogen application at 120 kg / hm2 showed the best performance on agronomic traits, photosynthetic characteristics and yield and quality.