| 花椒树下苜蓿、百脉根和白三叶的光合生理生态特性研究 |
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| 引用本文： | 曾艳琼,卢欣石,杨世民. 花椒树下苜蓿、百脉根和白三叶的光合生理生态特性研究[J]. 草业科学, 2008, 25(4): 119-123 |
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| 作者姓名： | 曾艳琼 卢欣石 杨世民 |
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| 作者单位： | 北京林业大学资源与环境学院,北京,100083;甘肃省临夏州林业种苗工作站,甘肃,临夏731100 |
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| 基金项目： | 奶业发展重大关键技术研究与示范项目子专题，北京林业大学自选课题资金项目，农业部草地农业生态系统学重点开放实验室资助项目 |
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| 摘 要： | 为科学指导林草复合中对林下间作牧草的选择,运用美国LI-COR公司制造的LI-6400便携式光合测定系统,研究了白三叶Tritolium repens、苜蓿Medicago sativa和百脉根Lotus corniculatus在林草间作时的光合生理生态特性,探讨三者在林下间作的生态适应性.结果表明:白三叶、苜蓿和百脉根净光合速率(Pn)和气孔导度(Gs)的日变化均为双峰曲线,2个峰值分别出现在11:00和15:00左右.3种植物的Pn与Gs都具有显著相关关系,且叶片温度(Tl)与蒸腾速率(Tr)呈极显著正相关关系.
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| 关 键 词： | 林草复合 苜蓿 百脉根 白三叶 光合作用 |
| 文章编号： | 1001-0629(2008)04-0119-06 |
| 修稿时间： | 2007-12-29 |
Study on photosynthetic physical and ecological characteristics of alfalfa, bird foot trefoil and white clover growing under Chinese prickly ash tree |
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| ZENG Yan-qiong,LU Xin-shi,YANG Shi-min. Study on photosynthetic physical and ecological characteristics of alfalfa, bird foot trefoil and white clover growing under Chinese prickly ash tree[J]. Pratacultural Science, 2008, 25(4): 119-123 |
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| Authors: | ZENG Yan-qiong LU Xin-shi YANG Shi-min |
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| Abstract: | The photosynthetic physical and ecological characteristics of alfalfa,bird foot trefoil and white clover growing under Chinese prickly ash tree were studied using Li-6400 portable photosynthesis system made by LI-COR company.The results indicated that daily variation of net photosynthesis rate(Pn),and stomata conductance(Gs) of three forage species showed a double-apex curve with two apex at 11:00am and 15:00pm,alfalfa had higher apex that the other species.Net photosynthesis rate(Pn) and stomata conductance(Gs) of the three species were significantly correlated,leaves temperature(Tl) and transpiration rate(Tr) also significantly correlated. |
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| Keywords: | tree-grass complex alfalfa white clover bird's foot trefoil photosynthesis |
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