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水分胁迫对山梨净光合速率和光合有效辐射的影响
引用本文:陶蕊,宋洪伟,李莉,梁应海,张冰冰.水分胁迫对山梨净光合速率和光合有效辐射的影响[J].农村实用技术与信息,2008(12):41-42,47.
作者姓名:陶蕊  宋洪伟  李莉  梁应海  张冰冰
作者单位:吉林省农业科学院果树研究所
摘    要:水分胁迫对山梨树主要光合生理指标影响的结果表明:对于田间山梨,Pn的年变化同PAR的年变化趋势大体相同,都呈双峰曲线:Pn的日变化呈双峰曲线,有明显的"午休"现象,PAR日变化呈"抛物线"型;干旱可大幅度降低Pn值,处理后60d左右Pn值降至最低;浇水在胁迫前期Pn值下降,后期Pn值上升;覆草效果最佳。山梨很适合做砧木。

关 键 词:水分胁迫  山梨  净光合作率  光合有效辐射

The Effect of Water Stress on Net Photosynthetic Rate and Photosynthetically Active Radiation(PAR) of Sorb
Authors:TAO Rui  SONG Hong- wei  LI Li  LIANG Ying- mei
Abstract:The effect of water stress on main photosynthetic physiological indexes of sorb showed that the annual varia- tion of Pn was roughly equal to the trend of PAR, presented bimodal curve; diurnal variation of Pn showed a two- peak curve, falling at noon, diurnal variation of PAR showed a parabola type; drought could greatly reduce Pn values, Pn values dropped to the lowest after treatment about 60 days; Pn values declined with treatment of watering at the beginning of stress, it in- creased in later period; the effect of covered grass was the best. Besides, sorb is suitable to be used as rootstock.
Keywords:water stress  sorb  net photosynthetic rate  photosynthetically active radiation
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