| 几种沙生灌木耐旱生理特性的研究 |
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| 引用本文： | 蔡玉成,王政琦,刘旭,贾福琴.几种沙生灌木耐旱生理特性的研究[J].中国沙漠,1988,8(4):39-45. |
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| 作者姓名： | 蔡玉成 王政琦 刘旭 贾福琴 |
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| 作者单位： | 宁夏农林科学院林业研究所 |
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| 摘 要： | 本文对盐池沙地六种灌木进行了耐旱生理特性的研究。研究内容包括相对含水量, 组织含水量、水势、蒸腾速率和气孔传导速率。结果表明, 毛条和柠条的各项生理指标均表现出较强的耐旱能力; 霸王和白茨以其低水势, 低蒸腾速率和气孔传导速率的方式耐旱; 而花棒和山竹子则以其庞大的根系吸取较多的水分, 维持植株高水势, 以保证其在水分亏缺下体内新陈代谢之需。由此可以认为, 耐旱植物不是循同一途径或方式耐旱的。
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Studes oil Drought-Resistant Physiology of several PsammoPhious shrubs |
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| Cai yucbeng,wang zhengqi,Liu xu,Ja Fuqin.Studes oil Drought-Resistant Physiology of several PsammoPhious shrubs[J].Journal of Desert Research,1988,8(4):39-45. |
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| Authors: | Cai yucbeng wang zhengqi Liu xu Ja Fuqin |
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| Institution: | Forestry Institute of Nigxia Agroforestry Academy |
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| Abstract: | Drought resistant physiological characterises, including relative water, con tent-tissue water content, water Potential, transpiration ratio and stomatal condutivity, of six xerophilous shrubs in the yanchi County were studied. The study results showed that all the Physiological indices of Caragana korshinski iexhibit sttronger drought resistance; zygophyllum xanthoxylum and Nitraria sp. depend their lower water Potential, transdiaiton ratio and stomatal conductivity against droughts Hedysarum scoparium and Hedysarum fruticpsum absorb a great amount of water by their big root system to resist drought, thus maintaining-higher water Potential in their bodies and ensuring water repuirement for matabolism under water stress. From this it followed that drougresistant plants do not follow the same ways and manners to resist drought injury. |
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