烟株叶片叶绿素的时空分布特征  

Spatial-temporal distribution of chlorophyll in leaves of tobacco plants

作　　者：肖庆礼 代先强 杨红柯 秦平伟 张世渠 陈昆燕 汪长国 戴亚 丁伟[1] XIAO Qingli;DAI Xianqiang;YANG Hongke;QIN Pingwei;ZHANG Shiqu;CHEN Kunyan;WANG Changguo;DAI Ya;DING Wei(College of Plant Protection,Southwest University,Chongqing 400715,China;China Tobacco Chongqing Industrial Co.,Ltd,Chongqing 400060,China;Chongqing Key Laboratory of Scientific Utilization of Tobacco Resources,Chongqing 400060,China;Chongqing Tobacco Company,Chongqing 400020,China)

机构地区：[1]西南大学植物保护学院,重庆市北碚区400715 [2]重庆中烟工业有限责任公司,重庆市南岸区400060 [3]烟叶资源科学利用重庆市重点实验室,重庆市南岸区400060 [4]重庆市烟草公司,重庆市江北区400020

出　　处：《中国烟草学报》2020年第1期58-65,共8页Acta Tabacaria Sinica

基　　金：重庆中烟工业有限责任公司博士后立项项目(2018-01);中国烟草总公司科技重点项目(110201502019)

摘　　要：【目的】探讨烟株叶片叶绿素的时空分布特征。【方法】2018年5-9月,利用平均相对偏差、回归分析和相关性分析等方法研究烟株叶片叶绿素的时空分布特征。【结果】1)烟株叶片叶绿素的动态变化呈“倒勺子”型,且叶绿素含量随部位的上升而增大;叶片发育前中期,叶绿素值呈弱变异,后期则呈中等变异。2)样带上中部和上部叶片叶绿素值的破碎化程度高于下部叶,烟株不同部位叶片叶绿素值的波动具有相似性。3)基于时间稳定性指数最小值得出代表性样点,建立了代表性样点叶绿素值与对应部位叶绿素平均值之间的回归模型。【结论】可利用代表性样点烟株叶片叶绿素值表征对应部位叶绿素的平均值,从而为本区烟田的水肥管理和成熟采收提供理论支撑。[Objective]The purpose of this paper is to investigate the temporal and spatial distribution characteristics of chlorophyll in tobacco leaves.[Methods]From May to September 2018,we designed a field experiment to investigate dynamics of chlorophyll in a small catchment of the Mowei Mountain,Pengshui County of Chongqing,by means of mean relative deviation,regression analysis and correlation analysis.[Results]1)The dynamic change of chlorophyll in tobacco leaves exhibited an"inverted spoon"pattern,and the chlorophyll content increased as leaf position rise.In the early and middle stages of leaf development,chlorophyll value showed a weak variation,while in the late stages,it showed a moderate variation.2)The fragmentation degree of chlorophyll value in upper and middle leaves was higher than that in lower leaves on the monitoring sample belt.In one tobacco plant,leaves in different positions had a similar variation of chlorophyll values.3)Based on the minimum value of the time stability index,a representative sample was obtained,and a regression model between the representative sample chlorophyll value and the corresponding position chlorophyll average was established.[Conclusion]The chlorophyll values of representative tobacco plants can be used to characterize the average value of chlorophyll in the corresponding positions,which provides theoretical support for water and fertilizer management and mature harvesting in tobacco fields.

关 键 词：烟叶 叶绿素 时空分布 小流域 黄壤旱地 

分 类 号：S572[农业科学—烟草工业]