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中国农学通报

中国农学通报 ›› 2016, Vol. 32 ›› Issue (28): 52-56.doi: 10.11924/j.issn.1000-6850.casb16070047

所属专题： 烟草种植与生产

• 林学 园艺 园林 • 上一篇    下一篇

烤烟对氯的吸收动力学分析

付小红,屠乃美,侯方舟,杨旭初   

  1. (湖南农业大学农学院,长沙 410128）
  • 收稿日期:2016-07-09 修回日期:2016-09-18 接受日期:2016-08-08 出版日期:2016-10-11 发布日期:2016-10-11
  • 通讯作者: 屠乃美
  • 基金资助:
    无基金

Analysis of Chlorine Absorption Kinetics of Flue-cured Tobacco

Fu Xiaohong, Tu Naimei, Hou Fangzhou, Yang Xuchu   

  1. (College of Agronomy, Hunan Agricultural University, Changsha 410128)
  • Received:2016-07-09 Revised:2016-09-18 Accepted:2016-08-08 Online:2016-10-11 Published:2016-10-11

PDF (PC)

348

摘要： 为揭示烤烟对氯素养分的吸收利用规律，以6个不同氯浓度水平的Hoagland营养液改良配方水培烤烟品种‘K326’和‘湘烟5号’，进行氯吸收动力学特征分析，并比较了烤烟品种、烟株本身的氯素营养状况、以及介质中氯养分浓度对烤烟吸收利用氯素的影响。结果表明：（1）中低氯(0~0.8 mmol/L)范围内根系氯吸收速率与氯浓度的关系符合米氏酶动力学模型；（2）中低氯处理下‘湘烟5号’和‘K326’表现出高亲和和较高的吸收速率，说明低水平的氯素环境更有利于烟株对氯的吸收积累；（3）自身含氯量少较含氯量多的烟株具有更大的吸收潜力。

关键词: 芦竹, 芦竹, 组织培养, 增殖, 腋芽

Abstract: In order to reveal the rules of chlorine absorption and utilization in flue-cured tobacco, a hydroponic experiment was carried out to explore the absorption kinetics of flue-cured tobacco varieties ‘K326’ and ‘Xiangyan 5’ in Hoagland’s nutrient solutions with six different chlorine concentration gradients. The effects of flue-cured varieties, chlorine content in tobacco plant and the chlorine concentration in the medium solution were compared. The results showed that (1) at low to moderate chlorine level (0-0.8 mmol/L), the relationship between root chlorine absorption rate and chlorine concentration accorded with the model of enzyme kinetics; (2) ‘Xiangyan5’ and ‘K326’ showed high affinity and higher absorption rate at low to moderate chlorine level, which indicated that low chlorine level was benefit to chlorine absorption; (3) the absorption potential of tobacco plants with low chlorine content was greater than that with high chlorine content.