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        成熟期地溫對煙葉主要致香物質含量的影響

        發(fā)布時間:2019-08-24 來源: 美文摘抄 點擊:


          摘要 [目的]為進一步認識土壤溫度與煙葉質量風格特色形成的關系提供數據支撐。[方法]在人工控制條件下,研究成熟期地溫變化對煙葉色素、多酚和西柏烷類化合物含量的影響。[結果]雙層遮陽降溫處理使上部煙葉色素含量降低28.1%,西柏烷類化合物含量升高16.6%,使中部煙葉色素、多酚含量分別降低20.3%、27.9%;雙層覆膜增溫處理使上部煙葉多酚和西柏烷類化合物含量分別降低35.9%、47.9%,使中部煙葉色素和多酚含量分別降低27.1%、35.9%,西柏烷類化合物含量升高40.1%;單層遮陽處理和單層覆膜處理對煙葉上述3種致香物質的含量影響不顯著。[結論]成熟期地溫對煙葉致香物質含量有明顯影響。
          關鍵詞 煙葉;成熟期;地溫;致香物質
          中圖分類號 S572 文獻標識碼 A 文章編號 0517-6611(2014)20-06569-04
          Effects of Soil Temperature on Tobacco Aroma Components at Maturity Stage
          WANG Pei et al
         。–hina Tobacco Chuanyu Industrial Co., LTD, Chengdu, Sichuan 610017)
          Abstract [Objective] The aim was to provide data support for further understanding the relationship between soil temperature and the style characteristic of tobacco leaves. [Method] The effects of soil temperature on tobacco leaf pigments, polyphenol and cembranoids compounds at maturity stage were studied under the condition of artificial control. [Result] Doublelayer shading cooling treatment made pigment content in upper parts of leaves decrease 28.1%, and cembranoids compounds increase 16.6%, and made the contents of pigments and polyphenol in middle parts of leaves decrease 20.3% and 27.9% respectively; Warming with doublelayer film mulching made the contents of polyphenol and cembranoids compounds in upper parts of leaves decrease 35.9% and 47.9% respectively, and made the contents of pigment and polyphenol in middle parts of leaves reduce 27.1% and 35.9% respectively, however, its cembranoids compounds content increased 40.1%; Singlelayer shading or singlelayer film mulching treatment had no obvious effects on these three aroma components contents mentioned above. [Conclusion] Soil temperature has significant effect on the content of aroma substance at tobacco maturity stage.
          Key words Tobacco leaves; Maturity stage; Soil temperature; Aroma components
          基金項目 川渝中煙工業(yè)有限責任公司項目(120550)。
          作者簡介 王佩(1984- ),女,河南溫縣人,助理農藝師,碩士,從事煙草栽培生理工作。
          收稿日期 20140613
          烤煙質量和風格特色的形成與生態(tài)環(huán)境和栽培技術密切相關[1],栽培技術條件一定的情況下,各種生態(tài)因子對煙葉質量有不同程度的影響[2-5]。其中,溫度對煙葉質量風格特色的影響尤為重要[6-7]。郭新輝等研究認為,煙草是喜溫作物,在22~28 ℃下有利于煙葉內化學物質的積累和轉化,從而提高煙葉香吃味[8]。楊恕良等研究表明,在各種生態(tài)因子對煙葉質量的影響中,平均氣溫所占比重最大,為總數的38.7%,>20 ℃的持續(xù)日數占總數的29%,其他都不到總數的10%[9];韋成才等研究表明,5~8月平均氣溫逐漸提升,總糖含量和還原糖含量將下降[10]。部分研究者認為,降低地溫日變化有利于調節(jié)煙葉內部化學平衡并提高煙株根系活性[7,11]。為此,筆者在人工控制條件下,研究成熟期煙株根系集中區(qū)域土壤溫度變化對煙葉香氣物質的影響,為進一步認識土壤溫度與煙葉質量風格特色形成的關系提供數據支撐和理論依據。
          1 材料與方法
          1.1 試驗材料
          供試煙草品種為當地主栽烤煙品種中煙100;供試土壤為黃褐土,土壤pH 5.8,有機質含量12.5 g/kg,堿解氮含量83.8 mg/kg,速效磷(P2O5)含量17.1 mg/kg,速效鉀(K2O)含量207.5 mg/kg。

        相關熱詞搜索:地溫 成熟期 煙葉 含量 物質

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