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近年来 ,中国新发展的集水系统已使干旱区的农业生产焕然一新。人们利用屋顶、沥青铺面、土路、天然地表及人工集流面收集雨水并储存于地窖中作为农田补充灌溉水源或发展小型庭院经济。集雨与滴灌相结合可用于温室种植珍贵花卉和其他经济作物。小型集雨工程在黄土高原已经比较普及 ,但受脆弱环境条件的限制 ,设计大型集雨系统尚在试验阶段。某些关键性技术 (如集水区材料 ,水质保护和高效用水 )尚待解决。
In recent years, China’s newly developed catchment system has revitalized agricultural production in arid areas. Rainwater is collected by rooftops, asphalt pavements, dirt roads, natural surface and artificial current collectors and stored in cellars to replenish irrigation water for farmland or to develop a small courtyard economy. Rainwater harvesting combined with drip irrigation can be used to grow precious flowers and other cash crops in greenhouses. Small rainwater harvesting projects have become more common in the Loess Plateau. However, the design of large rainwater harvesting systems is still undergoing experimental phase due to the fragile environmental conditions. Some key technologies (such as catchment materials, water quality protection and efficient water use) have yet to be resolved.