| 干旱沙区２种梨树光合特性的研究 |
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| 引用本文： | 张盹明,王继和,等.干旱沙区２种梨树光合特性的研究[J].西北植物学报,2001,21(1):94-100. |
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| 作者姓名： | 张盹明 王继和 |
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| 作者单位： | 甘肃省治沙研究所 |
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| 基金项目： | 甘肃省自然科学基金项目!( ZR-93 -0 3 9) |
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| 摘 要： | 通过对沙地栽培的苹果梨和锦丰梨２种梨树光合速率(Pn)日变化、季节变化的测度研究表明，苹果梨Ｐn日变化呈单峰曲线，峰值出现在上午９：００为１０．１５８μmol.m^-2.s^-1.。锦丰梨Ｐn变化呈双峰曲线，和一峰值在上午９：００，第二峰值在下午１３：００，第一峰值高于第二峰值Ｐn分别为１４．５６６μmol.m^-2.s^-1.和１０．９７２μmol.m^-2.s^-1.。并分析得出２种梨树Ｐn与其蒸腾速率（ＴＲＡＮ）、胞间ＣＯ２浓度（ＣＩＮＴ）、水平气压缺（ＶＰＤ）等影响因子之间存在着极显著相关关系和回归方程，以及２种梨树的水分利用效率（ＷＵＥ）。
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| 关 键 词： | 梨 光合速率 相关分析 日变化 季节变化 光合特性 干旱沙区 |
| 文章编号： | 1000-4025-(2001)01-0094-07 |
A research on the photosynthetic characteristics of Pyrus bretschneideri(CV.jinfeng and pingguoli) and strimson |
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| ZHANG Dun ming,WANG Ji he,MA Quan lin,WU Chun rong.A research on the photosynthetic characteristics of Pyrus bretschneideri(CV.jinfeng and pingguoli) and strimson[J].Acta Botanica Boreali-Occidentalia Sinica,2001,21(1):94-100. |
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| Authors: | ZHANG Dun ming WANG Ji he MA Quan lin WU Chun rong |
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| Abstract: | The diurnal and seasonal changes of photosynthetic rate (Pn) of Pyrus bretschneideri (CV.jinfeng and pingguoli) that are cultivated in sandy land were studied.Results showed that the diurnal changes of Pn of jinfeng cultivars show one-peak curves,and the peak value that occurs at 9:00 in the morning is 10.158 μmol.m-2.s-1.The diurnal changes of Pn of pingguoli cultivar show two peak curves and the first peak value that occurs at 9:00 in the morning and the second peak value that occurs at 13:00 are 14.566 μmol.m-2.s-1 and 10.972 μmol.m-2.s-1 respectively.Howerver there are more obvious relationship and regressive equation among Pn、TRAN、CINT、VPD in two kind of pear trees,and WUE also. |
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| Keywords: | pear photosynthetic rate correlative analysis diurnal change seasonal chap |
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