| 盐胁迫对霸王水势的影响 |
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| 引用本文： | 胡月楠,贺康宁,王占林,刘敏.盐胁迫对霸王水势的影响[J].中国沙漠,2009,29(5):905-910. |
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| 作者姓名： | 胡月楠 贺康宁 王占林 刘敏 |
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| 作者单位： | 1. 北京林业大学,水土保持学院,教育部水土保持与荒漠化防治重点实验室,北京,100083
2. 青海省农林科学院,林业所,青海,西宁,810016 |
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| 基金项目： | 国家科技支撑专题项目，教育部重大课题 |
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| 摘 要： | 2007年8月采用PSYPRO水势仪,测定了青海省农林科学院林业所试验基地盆栽霸王的叶水势、土壤水势及大气水势,并对霸王叶水势在不同土壤盐胁迫下的日变化进行了动态观测,分析了不同土壤盐胁迫条件下影响霸王叶水势变化的主要影响因子。结果表明,在土壤水分充足的条件下,霸王能在盐分浓度为1.5%的土壤中生长,此时叶水势值大小的比较为0>0.5%>1.5%;叶水势与土壤水势相关性的比较为0>0.5%>1.5%,与大气水势相关性的比较为0.5%>0>1.5%。
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| 关 键 词： | 霸王 叶水势 盐胁迫 气象因子 |
| 收稿时间： | 2008-4-17 |
| 修稿时间： | 2008-7-8 |
Effect of Salt Stress on Water Potential of Common Beancaper |
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| HU Yue-nan,HE Kang-ning,WANG Zhan-lin,LIU Min.Effect of Salt Stress on Water Potential of Common Beancaper[J].Journal of Desert Research,2009,29(5):905-910. |
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| Authors: | HU Yue-nan HE Kang-ning WANG Zhan-lin LIU Min |
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| Institution: | 1.Key Laboratory of Soil-Water Conservation and Desertification Control under Ministry of Education, College of Soil-Water Conservation, Beijing Forestry University, Beijing 10083, China;
2.Forestry Science Institute of Qinghai Agriculture and Forestry Academy, Xining 710016, China |
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| Abstract: | In August 2007, a PSYPRO water potential guage was used to measure the leaf water potential of Common Beancaper (Zygophyllom xanthoxylum (Bunge) Maxim) in pot at the experimental base of Qinghai Forestry Science Institute. Meantime, the soil water potential and the atmospheric water potential were measured. The diurnal variation of leaf water potential under different salt stress and the related factors were analyzed. The results showed that Common Beancaper can survive in the soil with salt concentration of 1.5% under adequate soil water supply. The leaf water potential of Common Beancaper under no salt stress was bigger than that under salt stress of 0.5%, and that under 0.5% was bigger than that under 1.5%. The correlation between leaf water potential and soil water potential falls into the order: that under no stress>under 0.5% stress>under 1.5% stress; the correlation between leaf water potential and atmospheric water potential: that under 0.5% stress>under no stresss>under 1.5% stress. |
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| Keywords: | common beancaper leaf water potential salt stress metrological factorsMeta |
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