Abstract:

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.

Key words: Medicago sativa, yield； Pn, PAR

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。

关键词: 紫花苜蓿；产草量；光合速率；有效光辐射