中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 狭叶锦鸡儿光合及水分生理生态特性的日变化研究 中国草地学报 2011,33 (2) 75-81
Position: Home > Articles > Studies on Daily Variations of Photosynthesis and Water Physiological Ecology of Caragana stenophylla Chinese Journal of Grassland 2011,33 (2) 75-81

狭叶锦鸡儿光合及水分生理生态特性的日变化研究

作  者：
刘佳;杨九艳;张璞进;宋雪梅;张灵军
单  位：
内蒙古电力勘测设计院;内蒙古大学生命科学学院
关键词：
狭叶锦鸡儿;净光合速率;水分生理特性;日变化
摘  要：
使用LI-6400便携式光合测定仪,对自然条件下鄂尔多斯高原狭叶锦鸡儿的光合作用和水分生理生态特性进行了研究,结果表明:狭叶锦鸡儿净光合速率(Pn)的日变化呈双峰型,峰值分别出现在10∶00和16∶00,有明显的光合"午休"现象;蒸腾速率(Tr)呈单峰型,在10∶00达到峰值;水分利用效率(WUE)呈双峰型,上午高于下午。Pn对光合有效辐射(PAR)、大气温度(Ta)和大气相对湿度(RH)的响应程度不同,其中对Ta和RH的响应程度均达到显著水平,而对PAR的响应相对较低,未达到显著水平。狭叶锦鸡儿的光补偿点为86.88μmol.m-2.s-1,光饱和点为875.00μmol.m-2.s-1,光合最适温度为30.92℃,最适空气相对湿度为33.91%。
译  名：
Studies on Daily Variations of Photosynthesis and Water Physiological Ecology of Caragana stenophylla
作  者：
LIU Jia1,YANG Jiu-yan1,ZHANG Pu-jin1,SONG Xue-mei1,ZHANG Ling-jun2(1.College of Life Sciences,Inner Mongolia University,Hohhot 010021,China;2.Inner Mongolia Power Exploration and Design Institute,Hohhot 010020,China)
关键词：
Caragana stenophylla;Net photosynthesis rate;Water physiological ecology;Diurnal variations
摘  要：
Photosynthesis and water physiological ecology of Caragana stenophylla on the Ordos plateau during the growth season were measured using LI-6400 portable photosynthesis system.The results showed that the net photosynthetic rate(Pn) of C.stenophylla had a diurnal change with two peaks,it peaked at 10∶00 and 16∶00,exhibiting an obviously phenomena of midday depression.The transpiration rate(Tr) took on a curve with only one peak,it peaked and reached high at 10∶00 am.The water use efficiency(WUE) had a diurnal change with two peaks and it was higher in the morning than in the afternoon.The responsiveness of Pn to photosynthetic active radiation(PAR),air temperature(Ta) and relative humidity(RH) was different.The responsiveness of Pn to Ta and RH was significant(P<0.05),but the responsiveness of Pn to PAR was relatively weak,not significant.The light compensation points of C.stenophylla was 86.88 μmol·m-2·s-1,the light saturation points of C.stenophylla was 875.00 μmol·m-2·s-1,the optimal temperature for photosynthesis of C.stenophylla was 30.92℃ and the optimum relative humidity of C.stenophylla was 33.91%.

相似文章

导出引用
计量
文章访问数: 6
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46