| 石羊河流域春小麦灌溉需水量时空分布研究 |
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| 引用本文： | 孙世坤,蔡焕杰,王健.石羊河流域春小麦灌溉需水量时空分布研究[J].节水灌溉,2010(5). |
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| 作者姓名： | 孙世坤 蔡焕杰 王健 |
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| 作者单位： | 西北农林科技大学旱区农业水土工程教育部重点实验室,陕西,杨凌,712100 |
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| 基金项目： | 国家“863”计划重点项目(2006AA100202);;国家科技支撑计划(2007BAD88B10) |
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| 摘 要： | 根据石羊河流域1960-2004年的气象资料,利用FAO的CROPWAT模型计算石羊河流域春小麦生育期多年平均蒸发蒸腾量、有效降水量和灌溉需水量;利用GIS建立流域空间和属性数据库,分析春小麦灌溉需水量空间分布规律。结果显示,春小麦蒸发蒸腾量、灌溉需水量空间分布趋势为从北往南逐渐降低,生育期降水量由北到南逐渐增大,其中春小麦多年平均蒸发蒸腾量为353.55~452.60 mm,生育期有效降水量为45.13~168.16 mm,雨养条件下石羊河流域春小麦产量减幅为27.90%~65.30%。因此,为保证春小麦产量需进行补充灌溉。利用CROPWAT模型计算,石羊河流域春小麦多年平均灌溉需水量为202.79~407.47 mm。
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| 关 键 词： | 灌溉需水量 CROPWAT模型 GIS 时空分布 |
The Study of Temporal and Spatial Distribution of Spring Wheat Irrigation Water Requirement in Shiyang River Basin |
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| SUN Shi-kun
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CAI Huan-jie
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WANG Jian.The Study of Temporal and Spatial Distribution of Spring Wheat Irrigation Water Requirement in Shiyang River Basin[J].Water Saving Irrigation,2010(5). |
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| Authors: | SUN Shi-kun CAI Huan-jie WANG Jian |
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| Institution: | Key Laboratory of Agricultural Soil & Water Engineering of Northwest A & F University/a>;Yang ling 712100/a>;Shaanxi Province/a>;China |
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| Abstract: | According to the meteorological data from 1960 to 2004 in Shiyang River Basin,the CROPWAT model and GIS were adopted to analyse the temporal and spatial distribution of average annual evapotranspiration,effective rainfall and irrigation water requirement of Spring wheat.The results showed that the tendency of spatial distribution of evapotranspiration and effective rainfall decreasd gradually from north to south in Shiyang River Basin,and the effective rainfall showed a opposite tendency.The average annual ... |
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| Keywords: | irrigation water requirement CROPEAT model GIS temporal and spatial distribution |
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