云南农业大学学报2011，Vol.26Issue(z2)：6-13,8.DOI:10.3969/j.issn.1004-390X(n).2011.z2.002
自然条件下滤减紫外辐射对烤烟生长及品质的影响
Effects of Attenuated UV Radiation on Growth and Quality of Flue-cured Tobacco Leaves under Natural Condition
摘要
Abstract
In order to study the effects of UV radiation on forming of regional high quality tobacco leaves in Lijiang, flue-cured tobacco was potted under different types of transparent films which were used to reduce solar UV radiation and the UVR penetration rates were 77. 6% , 62. 2% , 51. 4% respectively, take 100% (natural light) as check, to study the effects of UVR on growth and quality of flue-cured tobacco leaves. The results showed that: (1) The difference of agronomic traits of these 4 treat-merits were not significant after UVR attenuated; (2 ) In the early stage of tobacco growth, chlorophyll content of tobacco leaves increased when the UVR enhanced, chlorophyll content of CK decreased significantly in late of vigorous growing stage; photosynthesis rate decreased as UVR enhanced, each treatments were decreased 2, 2. 4, 4. 1μmol/ (m2·s) , respectively. (3) As the UVR attenuated, tobacco leaf thickness, palisade tissue thickness were decreased, each treatments were decreased 6. 72, 10. 04, 8. 84 and 23. 46, 28. 98 , 22. 98μm, respectively. Difference between CK and other treatments were significant, while difference between each treatments were not significant. (4) When UVR enhanced in certain limits, sugar compounds in tobacco leaves was increased, nitrogen compounds was decreased, but had no significant influence on carotenoid and potassium compounds. As the UVR attenuated, total sugar in upper leaves, middle leaves, lower leaves reduced by 2.75% ~ 6. 68% , 3. 37% ~ 6. 13% , 0. 98% ~ 1. 66% , respectively; reducing sugar reduced by 0. 42% ~ 2. 47% , 0. 63% ~4. 22% , 3. 40% ~5. 68% ; total nitrogen in upper leaves, middle leaves increased by 0. 21% ~0. 71% , 0. 05% ~0. 39% , while lower leaves reduced by 0. 07% ~0. 25% ; nicotine increased by 0. 14% ~ 1. 22% , 0. 05% ~0. 87% , 0. 34% ~0. 82%.关键词
紫外辐射/烤烟/生长/品质Key words
UV radiation/flue-cured tobacco/growth/quality分类
农业科技引用本文复制引用
孙平,李佛琳,杨焕文,顾毓敏,高远,练卫明,冯永铿,杨凯,陈茂建,尹剑藤,胡小曼..自然条件下滤减紫外辐射对烤烟生长及品质的影响[J].云南农业大学学报,2011,26(z2):6-13,8.基金项目
中国烟草总公司重大科技专项(110200902034) （110200902034）
云南省烟草公司科技项目(09YN022) （09YN022）
云南省应用基础研究项目(2008ZC051 M) （2008ZC051 M）
云南省科技厅人才项目(2010CI030). （2010CI030）
