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.
出处
《中国烟草学报》
EI
CAS
CSCD
北大核心
2013年第1期43-46,共4页
Acta Tabacaria Sinica
关键词
漂浮育苗
光质
光合特性
生长发育
floating system
light quality
photosynthetic characteristics
growth
