| 盐水处理对沙拐枣气体交换特征、光合色素和可溶性糖含量的影响 |
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| 引用本文： | 王伟华,张希明,闫海龙,梁少民,马建兵,杨小林.盐水处理对沙拐枣气体交换特征、光合色素和可溶性糖含量的影响[J].干旱区地理,2009,32(4). |
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| 作者姓名： | 王伟华 张希明 闫海龙 梁少民 马建兵 杨小林 |
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| 作者单位： | 1. 中国科学院新疆生态与地理研究所,新疆,乌鲁木齐,830011;中国科学院研究生院,北京,100049
2. 中国科学院新疆生态与地理研究所,新疆,乌鲁木齐,830011 |
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| 基金项目： | 中国科学院知识创新工程重要方向性项目，科技部西部开发科技行动重大项目 |
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| 摘 要： | 通过对室外不同浓度盐水(0、4、12、20、28 g/L粗盐)灌溉的桶栽沙拐枣(Calligonum spp.)气体交换参数、光合色素和可溶性糖含量随时间变化情况的分析结果表明:随着盐处理时间的延续,(1)低盐(4～12 g/L)处理条件下沙拐枣光合作用先逐渐增强,后又因非气孔因素限制而下降;高盐(20～28 g/L)处理条件下植株前期受气孔因素限制,后期受非气孔因素限制,光合作用严重下降.(2)不同盐处理条件下沙拐枣叶绿素a(chla)、叶绿素b(chlb)、总叶绿素(chl)含量均下降,类胡萝卜素(car)、chla/b、car/chl先增加后下降,但低盐处理较高盐处理变化小.(3)低盐处理对沙拐枣可溶性糖含量变化不大,而高盐处理下其极显著增加.因此,短期低盐处理促进沙拐枣光合作用,但长期盐处理亦使植物光合作用下降;高盐处理抑制沙拐枣生长,长期处理将导致植物死亡.
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| 关 键 词： | 沙拐枣 盐水处理 气体交换特征 光合色素 可溶性糖 气孔限制与非气孔限制 |
Effects of salt water treatments on gas exchange characteristics,photosynthetic pigment and soluble sugar content of Calligonum spp. at different times |
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| WANG Wei-hua,ZHANG Xi-ming,YAN Hai-long,LIANG Shao-min,MA Jian-bing,YANG Xiao-lin.Effects of salt water treatments on gas exchange characteristics,photosynthetic pigment and soluble sugar content of Calligonum spp. at different times[J].Arid Land Geography,2009,32(4). |
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| Authors: | WANG Wei-hua ZHANG Xi-ming YAN Hai-long LIANG Shao-min MA Jian-bing YANG Xiao-lin |
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| Institution: | WANG Wei-hua1,2,ZHANG Xi-ming1,YAN Hai-long1,LIANG Shao-min1,MA Jian-bing1,YANG Xiao-lin1,2(1 Xinjiang Institate of Ecology and Geography,Chinese Academy of Sciences,Urumqi 830011,Xinjiang,China,2 Graduated University of Chinese Academgy of Sciences,Beijing 100049,China) |
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| Abstract: | Changes of gas exchange characteristics,photosynthetic pigment and soluble sugar content of Calligonum spp.grown in cask with various salt water treatments(0,4,12,20 and 28 g/L raw salt) at different times were studied under outdoor conditions in Cele oasis in the south fringe of Taklimakan Dersert.The results showed that low salt water treatment(4~12 g/L)enchanced the photosynthesis of Calligonum spp.in short-term treatment and reduced it after being treated for two months because of non-stomatal factors.H... |
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| Keywords: | Calligonum spp salt water treatment gas exchange characteristics photosynthetic pigment soluble sugar stomatal limitation and non-stomatal limitation |
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