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| 供水对黄土高原主要造林树种水分利用效率的影响 | |
| 引用本文： | 刘淑明,孙丙寅,孙长忠.供水对黄土高原主要造林树种水分利用效率的影响[J].西北林学院学报,2004,19(2):15-17,111. |
| 作者姓名： | 刘淑明 孙丙寅 孙长忠 |
| 作者单位： | 1. 西北农林科技大学,生命科学学院,陕西,杨陵,712100 2. 杨凌职业技术学院林学系,陕西,杨陵,712100 3. 国家林业局,华北林业中心,北京,100714 |
| 基金项目： | 陕西省自然科学基金项目(sm097) |
| 摘 要： | 采用人工供水的方法，研究了不同水分条件下油松、侧柏、刺槐的水分利用效率。3a的试验结果表明，供水改善了土壤的水分状况，尤其在干旱年份，随供水量的增加，各树种土壤含水量与平水年相同水分处理条件下的差距缩小。平水年，各树种水分利用效率在1．0倍供水处理时最大，油松、侧柏、刺槐分别较对照提高35．3％、32．2％、26．9％；在欠水年，各树种水分利用效率与供水量呈正相关。 |
| 关 键 词： | 油松 侧柏 刺槐 水分利用效率 |
| 文章编号： | 1001-7461(2004)02-0015-03 |
Effect of Irrigation on Water Use Efficiency on the Loess Plateau |
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| LIU Shu-ming,SUN Bing-yin,SUN Chang-zhong.Effect of Irrigation on Water Use Efficiency on the Loess Plateau[J].Journal of Northwest Forestry University,2004,19(2):15-17,111. | |
| Authors: | LIU Shu-ming SUN Bing-yin SUN Chang-zhong |
| Institution: | LIU Shu-ming~1,SUN Bing-yin~2,SUN Chang-zhong~3 |
| Abstract: | Water use efficiency of Pinus tabulaeformis, Platycladus orientalis and Robinia pseudoacacia were studied by irrigating. The results showed that the irrigation improved the soil water state, especially the discrepancy of the soil water content between arid year and normal year decreased with increase of irrigation level .The water use efficiency of P. tabulaeformis, P. orientalis and R. pseudoacacia increased by 35.3%,32.2%,26.9% than that of control in normal year in irrigation of 1.0 times precipitation, while that of the trees was positively correlated with the irrigation level in arid year. |
| Keywords: | Pinus tabulaeformis Platycladus orientalis Robinia pseudoacacia water use efficiency |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |