Title

pH值對烤煙根系活力及烤後煙葉化學成分的影響

Translated Titles

Effects of pH Values on the Activity of Roots and Chemical Compositions of the Cured Leaves in Flue-cured Tobacco

Authors

郭培國(Pei-Guo Guo);陳建軍(Jian-Jun Chen);李榮華(Rong-Hua Li)

Key Words

pH值 ; 烤煙 ; 根系活力 ; 化學成分 ; pH value ; Flue-cured tobacco ; The activity of roots ; Chemical composition

PublicationName

中國農業科學

Volume or Term/Year and Month of Publication

33卷1期(2000 / 02 / 01)

Page #

39 - 45

Content Language

簡體中文

Chinese Abstract

採用砂培法對不同pH值條件下生長的烤煙根系活力系烤後煙葉中的化學成分進行了研究。實驗結果表明:在pH值5.5~8.0範圍內,隨著pH值的逐漸昇高,整個生育期的根系總吸收面積(TAAR),旺長前期、旺長後期和成熟期的根系活躍吸收面積(AAAR)和活躍吸收面積百分數(PAAR)均有隨pH值昇高而增加的趨勢。不同生長時期根系ATP的含量以pH7.0左右最高。pH值對不同生長時期根系的呼吸速率也有比較明顯的影響。pH爲8.5時各生長期烤煙根系活力較低,烤後煙葉中總氮、還原糖及蛋白質含量偏高。在pH5.5~8.0範圍內,隨pH值逐漸昇高,烤後煙葉中的鉀、鈣、鎂及總灰分含量呈增加趨勢,但總氮、蛋白質、銅、鋅、錳氯等含量則隨pH值的昇高而降低。烤後煙葉中的煙堿含量以pH6.0~7.0最高。在pH6.5~7.5範圍內還原糖含量適中。

English Abstract

A pot cultural experiment was conducted by sand culture. The effects of pH values on the activities of roots and the chemical compositions of the cured leaves in flue- cured tobacco were analyzed. The results showed that the total absorption area of roots (TAAR) increased gradually with the increase of pH value at every growing period. Also, the active absorption area of roots (AAAR) and the percentage of active absorption area of roots (PAAR) ascended with the increase of pH value at rapid growing period and maturing period. The ATP content at about pH7.0 was the highest. There was an obvious influence of pH values on the respiratory rate of roots at different growth periods. The activity of roots was lower, and the contents of total nitrogen, reducing sugar and protein in the cured leaves were higher than the normality at pH 8.5 treatment. At the range of pH values from 5.5 to 8.0, with the increase of pH value, the contents of potassium, calcium, magnesium as well as total ash in the cured leaves had a tendency to increase, but the contents of total nitrogen, protein, copper, zinc, manganese, chlorine in the cured leaves declined gradually. The nicotine contents were higher at pH 6.0~7.0 and the contents of the reducing sugar were rational at pH6.5~7.5 in the cured leaves.

Topic Category 生物農學 > 農業
生物農學 > 森林
生物農學 > 畜牧
生物農學 > 漁業