作物研究2019，Vol.33Issue(1)：29-35,7.DOI:10.16848/j.cnki.issn.1001-5280.2019.01.07
氯对烤烟农艺性状和叶绿素荧光参数的影响
Effect of Chlorine on Agronomic Traits and Chlorophyll Fluorescence Parameters of Flue-cured Tobacco
董一漩 1屠乃美 1杨锐1
作者信息
- 1. 湖南农业大学农学院, 长沙 410128
- 折叠
摘要
Abstract
The effects of different levels of chlorine application on growth, relative chlorophyll content and chlorophyll fluorescence parameters of flue-cured tobacco were studied with K326 and Yunyan 85 as materials. The results show that moderate chlorine application could improve the agronomic traits of flue-cured tobacco. The relative chlorophyll content of the two flue-cured tobacco varieties reached the highest at vigorous growing stage, and the relative chlorophyll content was higher at the low chlorine level (0-40 kg/hm2). The levels of chlorine supply between 20-60 kg/hm2, with the increase of chlorine level, minimum fluorescence ( Fo) and non photochemical quenching (NPQ) were increased, the actual photosynthetic rate ( Y[Ⅱ]) and potential photosynthetic rate ( Fv/Fm) were decreased, and the degree of PSⅡ reaction center closure (1-qP) decreased first and then increased. The non-photochemical quenching ( NPQ) tends to be gentle and the closure of PS II reaction center (1-q P) increases continuously in the range of 80-100 kg/hm2 chlorine supply. This indicates that photosynthetic organs function vigorously at low chlorine levels (0-40 kg/hm2), while high chlorine levels (60-100 kg/hm2) cause damage to photosystem II. Therefore, low chlorine level (0-40 kg/hm2) is more suitable for the growth of flue-cured tobacco. The chlorine level of 20-40 kg/hm2 is beneficial to improve the agronomic traits of tobacco plants, improve the photosynthetic characteristics of tobacco leaves, and make the chlorine content of roasted tobacco leaves within the standard range of high-quality tobacco production.关键词
烤烟/氯/农艺性状/叶绿素Key words
flue-cured tobacco/chlorine/agronomic traits/chlorophyll分类
农业科技引用本文复制引用
董一漩,屠乃美,杨锐..氯对烤烟农艺性状和叶绿素荧光参数的影响[J].作物研究,2019,33(1):29-35,7.
