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3 results

  1. Tobacco Science & Technology, 2010, 9, p. 57-60., ISSN.1002-0861

    Effects of upper leaf harvesting methods on physicochemical and economic properties of flue-cured tobacco

    GAO WEI-KAI(1); SHI HONG-ZHI(1); LIU GUO-SHUN(1); DU SHAO-MING(2); WANG JIAN-AN(1); YA PING(2); ZHANG XIAO-YUAN(2)
    1. National Tobacco Cultivation & Physiology & Biochemistry Research Center, Henan Agricultural University, Zhengzhou 450002, P.R. China; 2. Lincang Tobacco Company of Yunnan Province, Lincang 677000, P.R. China
    Flue-cured tobacco samples from Lincang tobacco growing area was used to investigate the effects of harvesting methods (upper leaves harvest completed by two primings at regular interval and by one priming) on physical character, chemical composition and ...
  2. Tobacco Science & Technology, 2009, 7, p. 57-60, ISSN.1002-0861

    Application of principal component analysis and Cluster analysis in tobacco quality evaluation

    MA JING-MIN; LIU GUO-SHUN; SHI XIANG-DONG
    Tobacco College of Henan Agricultural University, National Tobacco Cultivation and Physiology & Biochemistry Research Centre, Zhengzhou, China
    Combining with appearance quality and chemical analysis, the quality of 45 samples from Xinyang tobacco growing area in Henan was evaluated by principal component analysis and cluster analysis. The results showed that the appearance quality of samples was ...
  3. Tobacco Science & Technology, 2006, 2, p. 46-9, ISSN.1002-0861

    Effects of nitrogen rates on physiological characteristics of dark sun-cured tobacco

    FANG MING; FU YUN-PENG; LIU GUO-SHUN
    Henan Agricultural University, National Tobacco Cultivate Physiology and Biochemistry Research Centre, Zhengzhou, China.
    The effects of nitrogen rates on the physiological characteristics (including chlorophyll fluorescence) of dark sun-cured tobacco were studied with pot experiments. The results showed that with the increase of N rates, the NR activity, INV activity and ...