干旱区生态环境知识资源中心(Arid): 荒漠草原5种禾本科牧草光合特性及其影响因子研究

Arid

	荒漠草原5种禾本科牧草光合特性及其影响因子研究
其他题名	Photosynthetic Characteristics and Main Influence Factors of Five Kinds of Forage Grass in Desert Steppe
	岳淑芳 1; 刘彩凤 2; 许冬梅 1
来源期刊	西南农业学报
ISSN	1001-4829
出版年	2015
卷号	28 期号:1 页码:390-396
中文摘要	比较分析了荒漠草原5种禾本科牧草光合生理特性及其主要影响因子。结果表明:5种牧草净光合速率(P_n)、蒸腾速率(E)、气孔导度(G_s)、胞间CO_2浓度(C_i)日变化均呈双峰曲线, 并且均以沙生冰草最高, 蒙农杂交冰草最低, 品种间达到显著差异水平(P< 0. 05), 气孔限制导致了5种牧草存在不同程度的光合"午休"现象;5种牧草光饱和点(LSP)、光补偿点(LCP)、表观量资产额(AQY)、羧化效率(CE)表现为:沙生冰草>新麦草>沙芦草>无芒雀麦>蒙农杂交冰草, Chl a和Chl b含量大小表现为相同规律;5种牧草净光合速率受生理、生态因子的影响不同, 其中主要影响因子为蒸腾速率(E)、水分利用效率(WUE)和气孔限制值(L_s);5种牧草光合作用对光照强度(PAR)、CO_2浓度和温度等单一生态因子水平变化的响应均可以用二次方程来描述。综合分析比较, 沙生冰草对光的适应性很强, 是一种较耐旱的强光性植物, 可作为荒漠草原区推广种植的优良牧草。
英文摘要	Photosynthetic characteristics and the main influence factors of five kinds of forage grass were studied comparatively in desert steppe. The results showed that the responsive curves of photosynthetic rate (P_n), transpiration rate (E), stomatal conductance (G_s), intercellular CO_2 concentration (C_i) of five kinds of forage grass performed double-peak, Agropyron desertorum was the highest, A gropyon cristatum * A. desertorum cv Hycrest Mengnong the lowest, but there were significant differences among five kinds of forage grass (P <0. 05), while stomatal limitation resulted in different levels of photosynthetic ’lunch break’phenomenon;The light saturation point (LSP), light compensation point (LCP), apparent assets (AQY), carboxylation efficiency (CE) of five kinds of forage grass were:Agropyron desertorum > Psathyrostachys Nevski > Agropyron mongolicum > Bromus inermis Leyss > A gropyon cristatum * A. desertorum cv. Hycrest Mengnong, and the changes of contents of chlorophyll a and chlorophyll b had a same regular pattern;Photosynthetic rate (P_n) was affected by physiological and ecological factors, of which main influence factors were rate (E), water use efficiency (WUE) and stomatal limitation (L_s). The changes of photosynthetic active radiation (PAR), CO_2 concentration and air temperature of five kinds of forage grass could be described with quadratic equations. Based on comprehensive analysis, it was concluded that Agropyron desertorum had wider adaptability for light and could be used as good forage planting on desert steppe.
中文关键词	茶原料 ; 纤维素酶 ; 酶学性质 ; 速溶茶 ; 浸提
英文关键词	Desert steppe Forage grass Photosynthetic characteristics Psychological research
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:5368050
来源机构	宁夏大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/233512
作者单位	1.宁夏大学农学院, 银川, 宁夏 750021, 中国; 2.宁夏盐池县畜牧技术推广服务中心, 盐池, 宁夏 751500, 中国
推荐引用方式 GB/T 7714	岳淑芳,刘彩凤,许冬梅. 荒漠草原5种禾本科牧草光合特性及其影响因子研究[J]. 宁夏大学,2015,28(1):390-396.
APA	岳淑芳,刘彩凤,&许冬梅.(2015).荒漠草原5种禾本科牧草光合特性及其影响因子研究.西南农业学报,28(1),390-396.
MLA	岳淑芳,et al."荒漠草原5种禾本科牧草光合特性及其影响因子研究".西南农业学报 28.1(2015):390-396.