| 杨海梅,李明思.梭梭生长对水分胁迫的响应规律研究[J].干旱地区农业研究,2012,30(5):205~209 |
| 梭梭生长对水分胁迫的响应规律研究 |
| The Response of Halaxylon ammodendron Growth to Water Stress |
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| DOI：10.7606/j.issn.1000-7601.2012.05.38 |
| 中文关键词: 梭梭 水分胁迫 耗水规律 生长特性 水分生长函数 |
| 英文关键词:Halaxylon ammodendron water stress water consumption characteristics growth features function of vegetable growth to water consumption |
| 基金项目:石河子大学科学研究重大攻关项目（gxjs2010—zdgg01—01） |
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| 中文摘要: |
| 本研究旨在了解水分胁迫条件下准噶尔盆地梭梭的生长耗水规律，确定准噶尔盆地梭梭生态用水量。试验采用桶栽方法研究了梭梭在不同水分胁
迫下的耗水规律、生长特性以及耗水和生长之间的关系。结果表明，水分胁迫程度越大，梭梭适应水分亏缺环境的过程越长。梭梭生长期最低耗水量为50 mm；当耗水量超过150 mm时，其植株生长速度减慢；水分胁迫条件下，梭梭生长量随耗水量增加呈对数增加。梭梭冠幅宽度增加速度大于枝条长度增加速度，说明梭梭耗水主要贡献于新枝条的萌发，使冠层密度增加。试验结论对评价梭梭最低生态耗水量有帮助。 |
| 英文摘要: |
| It is very important to study the water consumption characteristics and growth features of Halaxylon ammodendron under water stress for determining sacsaoul eco-water requirements in the Junggar Basin in Xinjiang. Based on the tub-cultured experiments, the features and relations between water consumption and growth of Halaxylon ammodendron were studied under different water stress treatments. The results showed that the longer the time required
by Halaxylon ammodendron to adapt to the water environment was, the more deeply the degree of water stress was. The lowest water consumption of Halaxylon ammodendron was 50 mm and Halaxylon ammodendron grew slowly when its water consumption was beyond 150mm. Halaxylon ammodendron logarithmically grew approximately with its water consumption under water stress. The facts that Halaxylon ammodendron's canopy grew quickly than its branches indicated that water was very beneficial to the Halaxylon ammodendron’s canopy growth comparing with the Halaxylon ammodendron's branches growth. These results are helpful to evaluating the lowest eco-water requirements of Halaxylon ammodendron. |
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