湖南农业大学学报（自然科学版）2009，Vol.35Issue(3)：260-263,4.
氮和钾施用量对烟草光合特性的影响
Effects of different nitrogen and potassium on photosynthetic characteristics of tobacco
摘要
Abstract
A variety,Yunyan 202,was used as plant material in this paper to study effects of different nitrogen and potash fertilizer treatments on tobacco leaves,photosynthetic characteristics and parameters by pot-planting. The results showed that:the apparent quantum efficiency(α),maximum net photosynthetic rate(Pmax), the apparent dark respiration rate(Rd),light compensation point(LCP) and light saturation point(LSP) was significantly different under different nitrogen and potassium fertilizer treatments. When nitrogen and potash fertilizer increased, all of these photosynthetic parameters were improved. In low intensity light, high nitrogen treatment could effectively improve the photosynthetic rate of tobacco leaves;on the conditions that other fertilizers of tobacco leaves were enough,tobacco leaves had the maximum Pmax. Under different nitrogen and potassium fertilizer treatments,photosynthetic rate of tobacco leaves decreased mainly because of limitation of stomatal factors;the different fertilizer treatments which improved the photosynthetic rate of tobacco leaves could also improve their water use efficiency(WUE).关键词
烟草/氮肥/钾肥/光合特性Key words
tobacco/nitrogen fertilizer/potassiumfertilizer/photosynthetic characteristics分类
农业科技引用本文复制引用
孟显华,符云鹏,刘明,许晶,王飞,齐华..氮和钾施用量对烟草光合特性的影响[J].湖南农业大学学报（自然科学版）,2009,35(3):260-263,4.基金项目
辽宁省烟草专卖局(公司)科技开发项目(200701) （公司）
