两种紫花苜蓿品种光合特性的研究  

Studies on the Photosynthesis Characteristics of two Alfalfa Varieties

作　　者：徐丽君[1] 王波[2] 玉柱[3] 孙启忠[4] 

机构地区：[1]中国农业科学院研究生院,北京100081 [2]北京林业大学水土保持学院,北京100083 [3]中国农业大学草地研究所,北京100094 [4]中国农业科学院草原研究所,呼和浩特010010

出　　处：《中国农业科技导报》2008年第3期102-106,共5页Journal of Agricultural Science and Technology

基　　金：国家“十一五”科技支撑项目(2006BAD16B03)和(2006BA04A04);公益性行业(农业)科研专项经费项目(nyhyzx07-022)和948项目(2006-G38)资助

摘　　要：对金皇后和敖汉苜蓿两种苜蓿的株高、草产量及净光合速率等因素进行相关分析,结果表明:不同生长年限敖汉苜蓿的植株高度高于金皇后,但产草量低于金皇后;有效光辐射极显著影响两种苜蓿的净光合速率。空气湿度、空气温度和胞间二氧化碳浓度与净光合速率呈显著负相关。The correlation of plant height, yield, net photosynthesis （Pn） and other factors of Golden Empress and Aohan were analyzed. The results showed that the plant height of Aohan was higher than that of Golden Empress. However, its yield was lower than that of Golden Empress. The PAR could influence net Pn of both varieties significantly. The air humidity, air temperature and intercellular carbon dioxide concentration were was negatively correlated with netPn.

关 键 词：紫花苜蓿 产草量 光合速率 有效光辐射 

分 类 号：S551.7[农业科学—作物学]