河南农业大学学报2019，Vol.53Issue(2)：180-186,7.
重庆烟区烤烟生态环境的主成分分析
Principal component analysis of ecological environment for flue cured-tobacco in Chongqing tobacco growing area
摘要
Abstract
In order to understand the ecological environment difference between the middle and upper leaves of flue-cured tobacco,and to promote the production of fine tobacco. The ecological conditions of rainfall,temperature,light and relative humidity during the growth of central flue-cured tobacco were monitored,and the appearance characteristics of flue-cured tobacco in different parts were analyzed. The results showed that 1) The angle between the branch and the main vein in the middle leaf is obviously larger than that in the upper leaf. The middle leaf is matured in most areas except the basal part and the middle part of the leaf basal; 2) The highest and lowest temperatures in the middle and upper leaves of the middle leaves generally showed a trend of increasing first and then decreasing, while the temperature difference between day and night in the middle leaves followed the changing pattern of"rising first and then leveling off"type change,and the change of day and night temperature difference in the upper leaf growth period was reversed; 3) The light intensity of the middle leaves remained at a low level before the leaf age of 20 days,and remained at a higher level after the leaf age of 20 days. The light intensity of the upper leaves remained at a lower level before the leaf age of 10 days. Maintaining at a high level at 10 ～ 62 days,the difference in relative humidity between the middle and upper leaves is not obvious; 4) The rainfall during the growth period of the middle leaves is characterized by the regular pattern of more rainfall in the early stage and less rainfall in the middle and late stage,while that of the upper leaves are characterized by the regular pattern of more rainfall in the early stage,less rainfall in the middle stage,and more rainfall in the late stage; 5) The environmental factors affecting the growth of flue-cured tobacco are air temperature factor > illumination factor > water factor. Since the ecological environment difference of tobacco leaves in different parts mainly occurs at the two ends of the growth period,corresponding technical measures can be taken to improve the quality of tobacco leaves.关键词
烤烟/部位/生态环境/主成分分析Key words
flue-cured tobacco/parts/ecological environment/principal component analysis分类
农业科技引用本文复制引用
范瑞兆,杨超,邱坤,路晓崇,陈益银,杨红柯,王红锋,李钠钾,付小红,秦平伟..重庆烟区烤烟生态环境的主成分分析[J].河南农业大学学报,2019,53(2):180-186,7.基金项目
中国烟草总公司重庆市公司资助项目(NY20180601070002) （NY20180601070002）
