摘要
选择湖南3大烟区的永州市、浏阳市、桑植县进行客土盆栽试验,探讨土壤和气候及其互作对湖南烤烟部分中性挥发性香气物质含量的影响.结果表明:烤烟二氢猕猴桃内酯、大马烯酮、糠醛、巨豆三烯酮总量、β-紫罗兰酮5种中性挥发性香气物含量属中等变异强度,其变异强弱按该顺序依次递减.土壤和气候及其互作对烤烟不同中性挥发性香气物质含量的影响程度不同.对糠醛含量,气候具有显著效应,土壤及气候和土壤互作效应较小;对大马烯酮含量,气候、土壤均具有显著效应,以气候效应最大,气候和土壤互作效应较小;对β-紫罗兰酮和巨豆三烯酮总量,气候及气候和土壤互作均具有显著效应,以气候和土壤互作效应最大,土壤效应较小;对二氢猕猴桃内酯含量,气候、土壤及其互作效应均较小;气候对5个中性挥发性香气物质含量的变异贡献率为40.82%,土壤为20.67%,气候和土壤互作为38.51%.大田生长不同时期的气象因素对5种中性挥发性香气物质含量的影响程度不同,影响较大的前3个气象因子在发根期为降雨量、云量和平均气温,在旺长期为昼夜温差、日照时间和蒸发量,在成熟期为降雨量、蒸发量和平均气温.对5种中性挥发性香气物质含量影响的前3个主要土壤养分因子为速效钾、有效磷和pH.
A pot experiment with the soils from Yongzhou,Liuyang,and Sangzhi,the high-quality tobacco planting regions of Hunan Province,was conducted to study the effects of climate,soil,and their interaction on some neutral volatile aroma components in flue-cured tobacco leaves.The contents of test neutral volatile aroma components in the flue-cured tobacco leaves were of medium variation,and the variation intensity was decreased in the order of dihydroactinolide, damascenone,furfural,total megastigmatrienone,and β-ionone.Climate,soil, and their interaction affected the neutral volatile aroma components in different degrees.The furfural content was most affected by climate,the damascenone content was most affected by climate and by soil,the total megastigmatrienone and β-ionone contents were most affected by the interaction of soil and climate, while the dihydroactinolide content was less affected by soil,climate,and their interaction.The contribution of climate,soil,and their interaction to the contents of the five aroma components was 40.82%,20.67%,and 38.51%,respectively.During different growth periods of tobacco,different climate factors had different effects on the neutral volatile aroma components.The rainfall,cloudiness,and mean air temperature at rooting stage,the diurnal temperature amplitude,sunshine time,and evaporation at vigorous growth stage,and the rainfall,evaporation,and mean air temperature at maturing stage were the top three climate factors affecting the contents of the neutral volatile aroma components in flue-tobacco leaves.For the soil factors,the available potassium,available phosphorus,and pH were the top three factors affecting the contents of the five components.
出处
《应用生态学报》
CAS
CSCD
北大核心
2010年第8期2063-2071,共9页
Chinese Journal of Applied Ecology
基金
湖南中烟工业有限责任公司项目(K200607)
湖南省教育厅研究项目(09C1290)资助
关键词
烤烟
中性挥发性香气物质
气候
土壤
互作
flue-cured tobacco
neutral volatile aroma components
climate
soil
interaction.
