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| 高寒地区地膜覆盖栽培饲用甜菜光合日变化初探 | |
| 引用本文： | 李春鸣,蒲小朋,马姝雯,谢志云. 高寒地区地膜覆盖栽培饲用甜菜光合日变化初探[J]. 西北民族学院学报, 2005, 26(1): 46-48 |
| 作者姓名： | 李春鸣 蒲小朋 马姝雯 谢志云 |
| 作者单位： | [1]西北民族大学生命科学与工程学院,甘肃兰州730030／／甘肃农业大学草业学院,甘肃兰州730070 [2]甘肃农业大学草业学院,甘肃兰州730070 [3]西北民族大学生命科学与工程学院,甘肃兰州730030 [4]甘肃省农业环保监测站,甘肃兰州730020 |
| 摘 要： | 高寒地区饲用甜菜光合速率日变化呈现明显的双峰型,在上午10时和下午14时分别有两个高峰,且第二高峰低于第一高峰,在中午12时有一低谷,出现“光合午休”现象.相对湿度(RH)日变化呈双峰型,高峰和低谷出现的时间与光合速率(Pn)吻合.叶片温度(T1)日变化呈单峰型,高峰出现的时间为上午10时.覆膜饲用甜菜光合速率在第一高峰与对照差别明显,第二高峰差别不明显. |
| 关 键 词： | 高寒地区 地膜覆盖栽培 饲用甜菜 光合作用 |
| 文章编号： | 1009-2102(2005)01-0046-03 |
| 修稿时间： | 2005-01-20 |
Preliminary Study on Diurnal Variations of the photosynthetic Efficiency of Plastic Multching Cultivation on Fodder Sugar Beet (Beta vulgaris) In alpine region |
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| LI Chun-ming,PU Xiao-peng MA Shu-wen,XIE Zhi-yun. Preliminary Study on Diurnal Variations of the photosynthetic Efficiency of Plastic Multching Cultivation on Fodder Sugar Beet (Beta vulgaris) In alpine region[J]. Journal of Northwest Minorities University(Natural Science ), 2005, 26(1): 46-48 | |
| Authors: | LI Chun-ming PU Xiao-peng MA Shu-wen XIE Zhi-yun |
| Abstract: | Daily dynamic of the photosynthesis (Pn) of the sugar beet clearly showed double picks at 10:00 a.m. and 14:00 p.m., and the second pick was a bit lower than the first, the bottom appeared at 12:00, which can be explained as "the Noon Break" of photosynthesis. The daily dynamic of relative humidity (RH) of the sugar beet completely showed same tendency. But that of the leaf temperature (Tl) was totally difference, with only one peak at 10 a.m. |
| Keywords: | alpine region fodder sugar beet plastic mulch photosynthesis |
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