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| 西北地区生态环境建设与水资源相互关系问题的研究 | |
| 引用本文： | 宋孝玉,江彩萍,沈冰,史文娟,黄领梅. 西北地区生态环境建设与水资源相互关系问题的研究[J]. 干旱地区农业研究, 2004, 22(3): 127-131,143 |
| 作者姓名： | 宋孝玉 江彩萍 沈冰 史文娟 黄领梅 |
| 作者单位： | 1. 西安理工大学水资源研究所,陕西,西安,710048;西北农林科技大学,陕西,杨凌,712100 2. 西北农林科技大学,陕西,杨凌,712100 3. 西安理工大学水资源研究所,陕西,西安,710048 |
| 基金项目： | 国家自然科学基金(50209016)，陕西省自然科学基金(2003D13)，西安理工大学高学历人员科研启动基金. |
| 摘 要： | 中国西北地区气候干旱、水资源短缺,生态环境脆弱,水资源限制了生态环境建设;生态环境退化,又加剧了水资源的紧张。就目前生态环境建设与水资源相互关系问题的研究进行综述,指出西北地区生态环境建设必须以当地水资源为约束。 |
| 关 键 词： | 西北地区 生态环境建设 水资源可持续利用 |
| 文章编号： | 1000-7601(2004)03-0127-06 |
Interaction between ecological environment construction and sustainable use of water resources in Northwest China |
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| Abstract: | The research was conducted to discover the relationship between water consumption and leaf area index (LAI), plant height, dry matter and underground biomass of alfalfa (Medicago sativa), to discuss the law of water consumption of alfalfa, and to analyze the effect of soil moisture and water consumption on the growth of alfalfa. The results showed that the critical water stage was seedling to branching period, and the most water consumption took place during branching to flowering stage when the growth speed was the fastest. During fruit-setting and maturing period, the water consumption decreased, the growth speed dropped and the leaf area index declined. The appropriate irrigation capacity for alfalfa in Hexi corridor was 580 mm. The study results may provide theoretical basis for alfalfa planting, water resource saving and increasing of water use efficiency. |
| Keywords: | alafalfa water consumption water-consuming law water use efficiency |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |