不同光质对烤烟漂浮育苗中烟苗生长发育及光合特性的影响  

Effects of different light qualities on growth and development and photosynthetic physiological characteristics of flue-cured tobacco seedlings in floating system

作　　者：时向东 王林枝 满晓丽[1] 刘喜庆[1] 王旭锋[1] 

机构地区：[1]河南农业大学烟草行业烟草栽培重点实验室,郑州市农业路63号450002

出　　处：《中国烟草学报》2013年第1期43-46,共4页Acta Tabacaria Sinica

摘　　要：为寻找适宜的光质,实现漂浮育苗补光技术,本文研究了不同光质(红光、蓝光、白光)对烤烟漂浮育苗中烟苗生长发育和光合生理特性的影响。结果表明:(1)烟苗茎秆增粗发育不受光质影响,但烟苗茎秆增高发育则受红光促进,受蓝光抑制;(2)烟苗叶片发育亦明显受到蓝光抑制,尤其是叶片伸长发育;(3)红光处理下叶片具有较高的Chlb含量;蓝光处理下叶片光合速率、蒸腾速率和气孔导度显著低于白光和红光处理。从研究结果看,补充白光和红光可解决漂浮育苗前期寡照,促苗早生快长的问题;而在烟苗形态建成后补充蓝紫光照射,则可抑制烟苗生长。Effect of different light qualities （red light, blue light, white light） on leaf growth and development and photosynthetic characteristics in flue-cured tobacco seedlings in floating system were studied. Results showed that： （1） tobacco seedlings stalk thickening was influenced by light quality, i.e. promoted by red light and suppressed by the blue light; （2） tobacco seedling leaf development was significantly inhibited by blue light, especially in leaf elongation; （3） leaves in red light treatment showed higher Chlb content. Net photosynthetic rate （Pn）, stomatal conductance （Gs） and transpiration rate（Tr） was significantly lower under blue light than under white and red light. Complement white and red light can promote seedling grow. Blue-violet ray supplement in seedling morphogenesis can inhibit seedling growth.

关 键 词：漂浮育苗 光质 光合特性 生长发育 

分 类 号：S572[农业科学—烟草工业]