作物研究2012，Vol.26Issue(3)：255-259,5.DOI:10.3969/j.issn.1001-5280.2012.03.12
不同氮素水平对营养生长期南荻植株光合特性的影响
Effects of Different Nitrogen Rates on Photosynthetic Characteristics in Vegetative Period of Triarrhena Lutarioriparia L Liu
摘要
Abstract
In order to study the photosynthetic characteristics of Triarrhena Lutarioriparia L Liu under different nitrogen rates, the difference in photosynthetic parameters was compared by pot experiment with 5 nitrogen rate treatments. Results indicated that Pn(net photosynthetic rate) and the chlorophyll content were increased in nitrogen rate range-of 0 -4 g/ plant Higher Gs(stomatal conductance) and T,(transpiration rate) appeared simultaneously with higher Pn, while C,( intercellular CO, concentration) showed contrary. P, and the chlorophyll content were the highest (24.47 μmol/m2·s and 3.6445 mg/g) at level of 4 g/plant nitrogen application. Significant positive correlation existed between chlorophyll content and net photosynthetic rate ( r =0. 892 ). The light - response curves were different under different nitrogen application rates. Rd ( apparent dark respiration rate) and LCP (light compensation point) were increased after the nitrogen application. AQY (apparent quantum yield) was higher at the level of 2 g/plant and 4 g/plant nitrogen application. Pn increased in the range of 2 ～ 4 g/plant nitrogen application.关键词
南荻/光响应曲线/氮素/光合参数/生物量Key words
Triarrhena Lutarioriparia L Liu/ Light response curve/ Nitrogen/ Photosynthetic parameters/ Biomass分类
农业科技引用本文复制引用
邹振华,党宁,王惠群,张闯,李合松..不同氮素水平对营养生长期南荻植株光合特性的影响[J].作物研究,2012,26(3):255-259,5.基金项目
国家973计划前期研究专项(2010CB134403) （2010CB134403）
湖南省科技计划项目(2011FJ3015). （2011FJ3015）
