摘要
以G140品种为材料,研究了在不同肥力条件下,上、中、下叶位叶片中糖、氮、烟碱等内含物的动态变化。根据糖/碱比和氮/碱化提出了适宜采收期的指标。
Investigation was made on the changes of sugar, nitrogen, nicotine, etc. of tobacco leaves at different leaf position (ie upper, middle and lower position) under different conditions of N-fertilizer levels, with tobacco varicty G140. According to the sugar-nicotine ratio and nitrogen-nicotine ratio, suit- able indicatrix of harvesting stage is suggested.
出处
《江苏农学院学报》
CSCD
1991年第4期33-40,共8页
Jiangsu Agricultural Research
关键词
烟草
烤烟
优质
高产
栽培
生理
To bacco
Field-maturity
Sugar-nicotine ratio
Nitrogen-nicotine ratio
