安徽农业科学2018，Vol.46Issue(8)：46-51,99,7.
赤霉素(GA3)浓度对烤烟上部叶生长及产质量的影响
The Effects of Gibberellin(GA3)Concentration on the Growth, Yield and Quality of Tobacco Upper Leaves
摘要
Abstract
[Objective]To research the effects of different concentrations of gibberellin(GA3)on the growth of upper leaves of flue-cured to-bacco.[Method]Field test was carried in mountainous and dam land by one year multi-sites.Effects of different concentrations of gibberellin (GA3)on the upper leaves area,dry weight,yield and chemical components were studied.[Result]The growth rate of both average leaf are-as and dry weight of tobacco upper six leaves were increased and then declined as the spraying concentration of GA3increased from 0 to 50 mg/L, meanwhile the growth rates declined with the drop of leaf position.For the mountainous tobacco, the spraying of 20 mg/L GA3in-creased the leaf area and dry weight of tobacco upper six leaves by 20%,which resulted in 5.21%and 14.97%yield increase of Xinping and Yimen Counties,respectively.For the dam tobacco,the spraying of 30 mg/L GA3increased leaf areas and dry weight by 25%-30%,which resulted in 7.00% and 11.91% yield increase of Xinping and Eshan Counties, respectively.At the same time, the two treatments could re-duce the contents of nicotine, increase the total potassium, and improve the coordination of chemical components of tobacco upper leaves in both the mountainous and dam land.[Conclusion]The spraying of appropriate GA3concentration effectively promoted the expansion, in-creased the yield, and resulted in the coordination of chemical components in the tobacco upper leaves.Lower GA3concentrations showed no obvious effects, while the higher GA3concentrations delayed the mature of upper leaves and affected the baking quality of tobacco.关键词
烤烟/上部叶/开片/质量/赤霉素浓度Key words
Flue-cured tobacco/Upper leaves/Leaf expansion/Quality/Gibberellin(GA3)concentration分类
农业科技引用本文复制引用
卜令铎,计思贵,李江舟,张立猛,罗秀莲,安建南,何泉,李春林..赤霉素(GA3)浓度对烤烟上部叶生长及产质量的影响[J].安徽农业科学,2018,46(8):46-51,99,7.基金项目
云南省烟草公司科技项目"玉溪植烟土壤养分变化及施肥对策研究与应用"(2015YN13) （2015YN13）
