| 摘要: |
| 根据可供农田灌溉的水资源量和作物需水规律，以灌区净效益最大为目标，建立了确定灌区小麦、玉米、果树等3种主要作物适度灌水量的优化模型，并以陕西省桃曲坡灌区为例，计算确定了现状水资源承载力条件下，该灌区小麦、玉米、果树的适度灌水量。结果表明，在50％降雨频率年，小麦、玉米、果树的适度灌水量分别为1 144.5，1 577.85和850 m3/hm2；在75％降雨频率年，小麦、玉米、果树的适度灌水量分别为607.5，1 591.8和1 72 5m3/hm2。 |
| 关键词: 现状水资源 农田灌溉 优化模型 适度灌水量 |
| DOI： |
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| 基金项目:中国科学院知识创新项目“黄土高原水土保持与生态环境建设试验示范研究”(KZCX1-06-02-03)；国家重点科技攻关项目“黄土高原优质果业开发模式与技术研究”(2001BA508B20) |
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| Optimum models of water quantity for irrigation under present condition of water resource |
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| Abstract: |
| Optimum models of determining reasonable water quantity for irritation was introduced,according to useful irritation quantity,water requirement regulation of farm crops and maximum net efficiency of irrigation area in water shortage area.Than,as an example,reasonable irritation quantity of main 3 farm crops (wheat,corn,orchard),which were 1 144.5,1 577.85 and 850 m3／hm2 in years with 50% rainfal frequency respectively and 607.5,1 591.8 and 1 725 m3／hm2 in years with 75% rainfall frequency respectively,was determined under present condition of water resource in Tao Qupo irrigation area of Shaanxi province. |
| Key words: present condition of water resource agricultural irrigation optimum models reasonable irrigation quantity |
