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从技术、经济两方面对雨水集蓄灌溉利用系统进行了分析研究 ,建立了系统优化模型。该系统包括集、蓄、用 3个子系统 ,优化模型包括降水序列分析模型 ,集水量分析计算模型 ,蓄水窑窖优化设计模型 ,灌溉水量优化分配模型等 4个基础物理模型和经济模型。以陕西省礼泉县北部丘陵区为例 ,针对大田作物 (小麦、玉米 )雨水集蓄灌溉利用问题进行了实例分析。在可靠的理论和方法基础上建立的模拟模型 ,具有一定的通用性和实用性 ,为干旱半干旱地区进行雨水集蓄灌溉利用提供了理论依据和系统模式及规划设计的实用方法
From the technical and economic aspects, the rainwater harvesting and irrigation system was analyzed and established, and the system optimization model was established. The system consists of three subsystems: accumulation, storage and use. The optimization model includes four models: the precipitation sequence analysis model, the calculation model of catchment volume, the optimal design model of storage cellar, and the optimal allocation model of irrigation water. Taking the northern hilly area of Liquan County in Shaanxi Province as an example, the case analysis of rainwater harvesting irrigation in field crops (wheat and corn) was carried out. The simulation model established on the basis of reliable theory and method has a certain versatility and practicability. It provides a theoretical basis and a systematic model for planning rainwater harvesting and irrigation in arid and semi-arid regions and a practical method of planning and designing