涼山煙區(qū)氣象因子與烤煙煙葉化學(xué)成分含量的關(guān)系
Relationships between Climatic Factors and Chemical Components of Flue-cured Tobacco Leaves in Liangshan
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摘要: 運(yùn)用簡單和典型相關(guān)分析方法,，對涼山煙區(qū)主要?dú)庀笠蜃优c煙葉化學(xué)成分含量的關(guān)系進(jìn)行了研究。結(jié)果表明,，幾個(gè)主要?dú)庀笠蜃訉熑~化學(xué)成分含量的影響為：日均溫＞空氣相對濕度＞日照時(shí)數(shù)＞降水量＞氣溫日較差,；旺長期的氣象因子對化學(xué)成分含量影響最大；氣象因子對還原糖,、總糖,、總植物堿和鉀含量影響最大；煙葉總糖,、還原糖,、總植物堿的含量與伸根期氣溫、成熟期氣溫,、旺長期日照時(shí)數(shù),、成熟期空氣相對濕度呈正相關(guān)，與旺長期氣溫,、旺長期空氣相對濕度呈負(fù)相關(guān),；糖堿比與成熟期降水量呈正相關(guān)。統(tǒng)計(jì)還發(fā)現(xiàn),，在一定范圍內(nèi),，旺長期的溫度和空氣相對濕度降低，旺長期日照時(shí)數(shù)和成熟期降水增多能明顯提高煙葉的含鉀量,。Abstract: The relationships between major climatic factors in different growth periods of Liangshan tobacco-growing areas and chemical compositions of tobacco were investigated by using simple correlation and canonical correlation analysis. The result indicated that the effect of climatic factors on leaf chemical composition, from high to low were as follow: daily average temperature ＞relative air humidity＞sunshine hours＞precipitation＞daily range of temperature. During field growth phase, the weather in the fast-growing stage had the greatest impact on the chemical composition. Meteorological factors were most influential on the reducing sugar, total sugar, total alkaloids and potassium content of flue-cured tobacco leaves. The contents of leaf total sugar, reducing sugar and total alkaloids showed a positive correlation with temperature of the root extending stage, maturity temperature, and maturity relative air humidity, and showed a negative correlation with temperature and relative air humidity of the fast-growing stage. Sugar and alkali showed a positive correlation with maturity rain fall. Within certain range, fast-growing stage temperature and relative air humidity reduction, as well as the increase of fast-growing stage sunshine hours and maturity rainfall was obviously in favor of the increase of leaf potassium.
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