中国烟草学报2011，Vol.17Issue(5)：59-63,5.DOI:10.3969/j.issn.1004-5708.2011.05.010
利用弱光延长光照时间对温室烟苗光合作用与生长的影响
Effects of prolonged weak light duration on photosynthesis and growth of greenhouse tobacco seedlings
摘要
Abstract
Effects of prolonged weak light duration on photosynthesis and growth of greenhouse tobacco seedlings were studied to provide useful references for the improvement of tobacco seedling management. Tobacco seedlings of flue-cured tobacco K326 were irradiated by artificial light source with intensity of 70 pmol·m-2·s-1 for 4 hours daily after sunset starting from 6 leaf stage to seedling establishment. Results showed no change for light saturation point (LSP) and maximum net photosyn-thetic rate (Pn max) after prolonging light duration by using weak light. However, light compensation point (LCP) decreased, Pn under weak light and apparent quantum yield ( AQY) increased. Content of chlorophyll a and chlorophyll b increased while the value of chlorophyll a/b decreased. Prolonging light duration by using weak light can enhance daily photosynthesis and photosynthetic production capacity, promote seedlings growth and hence improve quality.关键词
烤烟/光照时间/光合作用Key words
flue-cured tobacco/ light duration/ photosynthesis分类
农业科技引用本文复制引用
吴云平,朱信,王瑞,张光辉,李满良..利用弱光延长光照时间对温室烟苗光合作用与生长的影响[J].中国烟草学报,2011,17(5):59-63,5.基金项目
安徽中烟工业公司科技重大专项"烟叶区域风格差异分析及上部烟研究"(20092009) （20092009）
