中国农学通报2026，Vol.42Issue(1)：12-19,8.
外源植物调节剂对云南烤烟上部叶开片及品质的影响
Influence of Exogenous Plant Regulators on Expansion and Quality of Upper Leaves of Flue-cured Tobacco in Yunnan Province
摘要
Abstract
To address the issues of inadequate expansion and low quality of upper leaves in Yunnan flue-cured tobacco,field experiments were conducted using'Yunyan 87'as the test material in Dehong and Lijiang.The effects of three exogenous regulators,forchlorfenuron(KT),zeatin(ZT),and brassinolide(BR),as well as their concentrations and application timings on the expansion and quality of upper leaves were investigated.The results showed that:(1)application on the day of topping was optimal,significantly superior to application 7 days after topping;(2)single-agent treatments were more effective than combined treatments,with 20 mg/L KT showing the best promoting effect on leaf expansion.In Dehong,the leaf length and width increased by 9.85％-32.90％and 23.34％-41.27％,respectively,compared to the control.In Lijiang,the leaf area increased by 16.27％-31.30％compared to the control(water);(3)regarding appearance quality,the order of effectiveness was 10 mg/L KT＞20 mg/L KT＞1 mg/L BR＞0.5 mg/L BR,with weighted total scores increasing by 2.19％,3.28％,3.28％,and 1.82％,respectively,compared to the control,particularly in terms of oil content and color intensity;(4)for sensory quality,the order was 1 mg/L BR＞20 mg/L KT＞10 mg/L KT＞0.5 mg/L BR,with weighted total scores increasing by 11.17％,10.18％,5.73％,and 0.99％,respectively,compared to the control;(5)in terms of chemical composition,the optimal treatments resulted in nicotine,total sugar,and potassium-to-chlorine ratio within appropriate ranges.KT treatments reduced nicotine content by 3.80％-15.50％,mitigating the strength of upper leaves.In conclusion,applying 20 mg/L KT(to promote leaf expansion)or 1 mg/L BR(to improve quality)on the day of topping is the optimal approaches for high-quality production of upper leaves in Yunnan flue-cured tobacco.This study provides a reference for enhancing the yield and quality of upper leaves in flue-cured tobacco.关键词
外源植物调节剂/氯吡脲/玉米素/油菜素内酯/上部叶/烤烟/开片/产量/品质Key words
exogenous plant regulators/forchlorfenuron/zeatin/brassinolide/upper leaves/flue-cured tobacco/expansion/yield/quality分类
农业科技引用本文复制引用
杨世波,董庆,沈嘉,汪季涛,朱一帆,吴会平,余达文,滕世华,和旺伟,万静,段恒曦,祖朝龙..外源植物调节剂对云南烤烟上部叶开片及品质的影响[J].中国农学通报,2026,42(1):12-19,8.基金项目
安徽中烟工业有限责任公司技术服务项目"安徽中烟基地技术服务"(2023340000340030) （2023340000340030）
云南香料烟有限责任公司科技计划一般项目"德宏KRK26品种烤烟生产关键技术优化研究"(xlyybxm2023004) （xlyybxm2023004）
安徽中烟工业有限责任公司科技项目"基于德宏温光条件的KRK26特色烤烟品种质量潜力挖掘研究"(2023119). （2023119）
