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| 云南鹤庆桑树光合生理特性日变化研究 | |
| 引用本文： | 杜伟,程嘉翎,柴建萍,姚丽萍,洪正杰,黄平.云南鹤庆桑树光合生理特性日变化研究[J].西南农业学报,2012,25(4):1227-1231. |
| 作者姓名： | 杜伟 程嘉翎 柴建萍 姚丽萍 洪正杰 黄平 |
| 作者单位： | 1. 云南省农业科学院蚕桑蜜蜂研究所,云南蒙自,661101 2. 中国农业科学院蚕业研究所,江苏镇江,212018 3. 鹤庆县茶桑果药站,云南鹤庆,675007 |
| 基金项目： | 现代农业产业技术体系建设专项(蚕桑)(ARS-22-SYZ27) |
| 摘 要： | 通过对云南鹤庆地区栽植的农桑12号的净光合速率、蒸腾速率等光合特征参数及其相应环境因子的日变化测定,探讨了云南红土高原桑树的光合生理特性.结果表明,桑树净光合速率日变化曲线呈“双峰”型,有明显的“午休”现象,且光合“午休”现象主要受非气孔限制因素的影响.蒸腾速率与气孔导度的日变化呈“双峰”型曲线,并且呈极显著的正相关关系；胞间CO2浓度的变化趋势与净光合速率的变化相反.各环境因子对桑树光合特征参数的影响较大,光合有效辐射对净光合速率的影响起决定性作用. |
| 关 键 词： | 桑树 日变化 净光合速率 环境因子 |
Study on Diurnal Variation of Photosynthetic Physiological Characteristics of Mulberry in Heqing Yunnan |
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| DU Wei , CHENG Jia-ling , CHAI Jian-ping , YAO Li-ping , HONG Zheng-jie , HUANG Ping.Study on Diurnal Variation of Photosynthetic Physiological Characteristics of Mulberry in Heqing Yunnan[J].Southwest China Journal of Agricultural Sciences,2012,25(4):1227-1231. | |
| Authors: | DU Wei CHENG Jia-ling CHAI Jian-ping YAO Li-ping HONG Zheng-jie HUANG Ping |
| Institution: | 1(1.Institute of Sericulture and Apiculture,Yunnan Academy of Agricultural Sciences,Yunnan Mengzi 661101,China;2.Sericultural Research Institute,Chinese Academy of Agricultural Sciences,Jiangsu Zhenjiang 212018,China;3.Tea,Mulberry,Fruit &Drug Station of Heqing County,Yunnan Heqing 675007,China) |
| Abstract: | In order to discuss the photosynthesis characters of mulberry in Yunnan laterite plateau,Nongsang 12 in Heqing Yunnan were used as experimental materials to analyze the diurnal variation of net photosynthetic rate,transpiration rate,other photosynthetic characteristic parameters and corresponding environmental factors.The results showed that the curves of daily variation of net photosynthetic rate displayed a bimodal curve and an obviously midday depression.The lower net photosynthetic rate at noon was mainly affected by non-stomatal limitation factors.The curves of daily variation of transpiration rate and stomatal conductance displayed bimodal curves,and showed significantly positive correlation.Diurnal variation of intercellular CO2 was reverse of that of net photosynthesis rate basically.The environmental factors affected the photosynthetic characteristic parameters of mulberry,and photosynthetic effective radiation played a decisive role on net photosynthetic rate. |
| Keywords: | Mulberry Diurnal variation Net photosynthetic rate Environmental factor |
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