四川农业大学学报 ›› 2022, Vol. 40 ›› Issue (4): 565-573.doi: 10.16036/j.issn.1000-2650.202111048

• 作物营养 • 上一篇    下一篇

喷施磷酸二氢钾和乙烯利对烤烟上部烟叶同步成熟及质量的影响

曾淑华1, 吴润生1, 郭仕平2, 夏春3, 刘雷1, 雷晓3, 陈相君1, 张永辉3,*, 刘雅洁1,*   

  1. 1.四川农业大学农学院,成都 611130;
    2.四川省烟草专卖局,成都 610041;
    3.四川省烟草公司泸州市公司,四川 泸州 646000
  • 收稿日期:2021-11-08 出版日期:2022-08-28 发布日期:2022-08-29
  • 通讯作者: *张永辉,高级农艺师,主要从事烟草栽培研究,E-mail:523731802@qq.com;刘雅洁,讲师,博士,主要从事烟草栽培与育种研究,E-mail:31917272@qq.com。
  • 作者简介:曾淑华,博士,副教授,主要从事烟草栽培与生理生化研究,E-mail:zshgsp@163.com。
  • 基金资助:
    四川省烟草公司泸州市公司科技项目(202051050024015,201951050029016)

Effect of Foliar Application of Potassium Dihydrogen Phosphate and Ethephon on the Synchronous Maturation and Quality of Upper Leaves of Flue-Cures Tobacco

ZENG Shuhua1, WU Runsheng1, GUO Shiping2, XIA Chun3, LIU Lei1, LEI Xiao3, CHEN Xiangjun1, ZHANG Yonghui3,*, LIU Yajie1,*   

  1. 1. College of Agronomy, Sichuan Agricultural University, Chengdu 611130, China;
    2. Sichuan Province Tobacco Monopoly Administration, Chengdu 610041, China;
    3. Luzhou Branch of Sichuan Tobacco Corporation, Luzhou 646000, Sichuan, China
  • Received:2021-11-08 Online:2022-08-28 Published:2022-08-29

摘要: 【目的】 研究磷酸二氢钾和乙烯利的浓度和喷施时间对烤烟上部烟叶同步成熟及质量的影响。【方法】 采用响应曲面优化设计中的Box-Behnken法,对磷酸二氢钾喷施浓度(0、3.4、6.8 g/L)、乙烯利喷施浓度(0、0.05、0.1 g/L)和喷施时间(打顶后20、25 和30 d)进行三因素三水平的试验设计,共16个喷施处理。测定了烟株顶部从上往下1~3片(T上)及4~6片(T下)烟叶与成熟相关的指标,以此来评判上部6片烟叶的同步成熟状态,并考察初烤烟叶的外观质量和化学成分,计算烟叶质量综合得分。【结果】 喷施磷酸二氢钾和乙烯利后烟叶的各指标“T上-T下”绝对值之和明显小于对照,能促进上部烟叶的同步成熟,处理T2(打顶后20 d,配合喷施3.4 g/L磷酸二氢钾和0.1 g/L乙烯利)最有利于同步成熟;烟叶外观质量评分较对照提高了0.45~7.7分,烤后烟叶质量综合得分较对照提高了0.82~6.33分,以T2的得分最高(79.60);预测当喷施时间为打顶后20 d、磷酸二氢钾浓度为3.808 g/L以及乙烯利浓度为0.081 g/L时,上部烟叶的同步成熟状态最好,烤后烟叶质量最佳。【结论】 在烟株打顶后20 d喷施适宜浓度的磷酸二氢钾和乙烯利能促进烤烟上部烟叶的同步成熟并能提高烤后烟叶的质量。

关键词: 烤烟, 磷酸二氢钾, 乙烯利, 同步成熟, 质量

Abstract: 【Objective】 This study aims to study the effects of the concentration and spraying time of potassium dihydrogen phosphate and ethephon on the synchronous maturity and quality of upper tobacco leaves. 【Method】 The Box-Behnken method of the response surface optimization design was used to carry out the experimental design, intending to investigate three factors and three levels of spraying concentration of potassium dihydrogen phosphate (0、3.4、6.8 g/L), ethephon (0、0.05、0.1 g/L) and spraying time (20、25、30 days after topping). A total of 16 spray treatments and the indexes related to the mature state of tobacco leaves from top to bottom 1-3 pieces and top 4-6 pieces were measured. The appearance quality and chemical composition of flue-cured tobacco were also evaluated. 【Result】 Spraying potassium dihydrogen phosphate and ethephon could promote the synchronous maturity of the upper tobacco leaves, and the effect of treatment T2 (20 days after topping, combined with spraying 3.4 g/L potassium dihydrogen phosphate and 0.1 g/L ethephon) was the best. The appearance quality score increased by 0.45-7.7 points compared with control, the Comprehensive evaluation score of flue-cured tobacco was 0.82-6.33 points higher than control, and the score of T2 was the highest (79.60). It can be predicted that when the spraying time is 20 days after topping, the concentration of potassium dihydrogen phosphate is 3.808 g/L and the concentration of ethephon is 0.081 g/L, the synchronous maturity of upper tobacco leaves is the best and the quality of flue-cured tobacco leaves is the best. 【Conclusion】 Synchronous maturity of upper tobacco leaves was advanced and tobacco quality was enhanced by spraying appropriate concentration of potassium dihydrogen phosphate and ethephon at 20 days after topping.

Key words: flue-cured tobacco, potassium dihydrogen phosphate, ethephon, synchronous maturity, quality

中图分类号: 

  • S572