摘要
通过外源葡萄糖调节营养液的碳氮比,研究了不同碳氮比对烤烟生理生化特性及化学成分的影响,结果表明,和对照相比,不同碳氮比处理均能提高叶片叶绿素的含量;碳氮比为0.5时,叶片硝酸还原酶的活性最强;蔗糖转化酶活性和淀粉酶活性(碳氮比为0.75处理除外),以碳氮比为0.5的处理最高;随碳氮比的升高各处理氮、钾含量呈现先升后降的趋势,磷含量则一直升高;各处理烟叶总糖含量都较对照高,其中以碳氮比为0.4,0.5,0.75处理效果较明显;还原糖含量表现为:碳氮比0.5>碳氮比0.4,0.75>碳氮比0.2,1.5。
This paper studied the effects of different C/N ratio adjusted by glucose on the physiological and biochemical characteristics and chemical components of flue-cured tobacco using water-culture method. The results showed that all the C/N ratio treatments could increase the content of leaf chlorophyll a and chlorophyll b compared with CK. The activity of nitrate reductase increased with the increase of C/N ratio when C/N was under 0.5, but it was restrained when C/N exceeded 0.5. The highest activities of leaf invertase and amylase were from the 0.5 C/N treatment. With the increase of C/N ratio, the N and K contents of flue-cured tobacco increased and then decreased, but P content increased all the way. The total sugar content of tobacco was all higher in C/N ratio treatments than that in CK. The reduced sugar content was the highest for C/N treatment 0.5, followed by 0.4 and 0.75, then 0.2 and 1.5.
出处
《华北农学报》
CSCD
北大核心
2007年第6期161-164,共4页
Acta Agriculturae Boreali-Sinica
基金
河南省烟草专卖局重大项目(HYKJ200203)
关键词
外源糖
碳氮比
烤烟
生理生化特性
化学成分
Sugar
C/N ratio
Flue-cured tobacco
Physiological and biochemical characteristics
Chemical components