Photosynthesis Characteristics of Three Species of Forages in the Arid-Hot Valleys  

作　　者：YANG Yanxian LIAO Chengfei SHA Yucang PAN Zhixian FENG Guangheng JI Zhonghua 

机构地区：[1]Institute of Tropical Eco-Agricultural Sciences, YunnanAcademy of Agricultural Sciences, Yuanmou 651300, Yunnan,China

出　　处：《Wuhan University Journal of Natural Sciences》2008年第3期309-316,共8页武汉大学学报（自然科学英文版）

基　　金：the National Science and Technology Support-ing Program in the Eleventh Five-Year Plan of China (2006BAC01A11);the Natural Science Foundation of Yunnan Province (2006D0092M)

摘　　要：By using TPS-1 portable photosynthesis measuring system, the photosynthesis characteristics of three kinds of high quality forages used in the arid-hot valley eco-agricultural models in Yuanmou were measured. The paper shows that Pennisetum purpureum Schumach is the heliophilous shade tolerance C4 plant and Styiosanthes guianensis is the heliophilous shade tolerance plant, both of them could make full use of the light energy under the weak light environment and have relatively strong CO2 assimilation capacity. Cajanus cajan（L.） Millspaugh is the strong heliophilous plant with high requirement for light and has a relatively weak CO2 assimilation capacity. Generally, these three kinds of high quality forages are drought resistant and show a relatively good adaptability to the arid-hot valley environment. To improve cultivation administration level and to interplant timely in the forest can be helpful to the ecological niche and to improve the productivity force.By using TPS-1 portable photosynthesis measuring system, the photosynthesis characteristics of three kinds of high quality forages used in the arid-hot valley eco-agricultural models in Yuanmou were measured. The paper shows that Pennisetum purpureum Schumach is the heliophilous shade tolerance C4 plant and Styiosanthes guianensis is the heliophilous shade tolerance plant, both of them could make full use of the light energy under the weak light environment and have relatively strong CO2 assimilation capacity. Cajanus cajan（L.） Millspaugh is the strong heliophilous plant with high requirement for light and has a relatively weak CO2 assimilation capacity. Generally, these three kinds of high quality forages are drought resistant and show a relatively good adaptability to the arid-hot valley environment. To improve cultivation administration level and to interplant timely in the forest can be helpful to the ecological niche and to improve the productivity force.

关 键 词：FORAGES PHOTOSYNTHESIS arid-hot valley 

分 类 号：S311[农业科学—作物栽培与耕作技术] Q945.11[农业科学—农艺学]