中国农业气象

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低纬高原滤减UV-B辐射对烤烟营养生长期形态性状的影响

钟楚;陈宗瑜;王毅;刘彦中;   

  1. 云南农业大学农学与生物技术学院;红塔集团技术中心;云南农业大学烟草学院;
  • 出版日期:2010-02-10 发布日期:2010-02-10
  • 基金资助:
    红塔集团玉溪烟叶生态评价体系(KX140346)“玉溪烟区紫外辐射强度变化对烤烟质量影响的机理研究”

Effects of Attenuated UV-B Radiation on Morphological Characteristics of Tobacco Vegetative Stage in Low Latitude and High Elevation Region

ZHONG Chu1,CHEN Zong-yu1,WANG Yi2,LIU Yan-zhong3(1.College of Agronomy and Biotechnology,Yunnan Agricultural University,Kunming 650201,China;2.Technological Center of Hongta Group,Yuxi 653100;3.College of Tobacco Science,Yunnan Agricultural University,Kunming 650201)   

  • Online:2010-02-10 Published:2010-02-10

摘要: 在云南玉溪主产烟区的通海县(海拔1806.0m)自然环境中,通过覆膜减弱UV-B的辐射强度(分别是自然环境下的25%、50%和65%),采用盆栽试验研究了UV-B辐射对烤烟K326团棵中后期-现蕾期部分形态特征的影响。结果表明:减弱自然环境下的UV-B辐射对K326株高、最大叶长、叶宽及叶面积、茎围、节间距和叶数等没有显著影响。但在不同减弱UV-B处理下,株高、最大叶长、最大叶面积和节间距等呈现增加的趋势,而叶数则有减少的趋势。说明目前通海的UV-B辐射水平已对K326的形态建成产生了一定的抑制效应。

关键词: 减弱UV-B辐射, 烟草, 营养生长, 形态性状

Abstract: To study the effects of Ultraviolet-B(UV-B)radiation on morphological characteristics of tobacco cultivar K326,the potted experiment,which reduced 25%,50% and 65% solar UV-B intensities during tobacco vegetative stage(16th-28th June),was conducted in Tonghai County(1806.0m) Yunnan province,one of the main tobacco production bases in China.The results showed that there were no significant effects of attenuated UV-B radiation on plant height,maximum leaf length,leaf width and leaf area,stem circumference,joint distance and leaf number of tobacco K326.However,the plant height,maximum leaf length and leaf area and joint distance increased under different treatments,while the leaf number decreased.The results indicated that solar UV-B radiation in this region might have some inhibition effects on tobacco morphological characteristics.

Key words: Attenuated UV-B radiation, Attenuated UV-B radiation, Tobacco, Vegetative growth, Morphological characteristics