【摘要】 以解决甘肃旱区干旱问题为突破口，通过对自然降水径流的收集、贮存和利用的研究，形成了集工程、农艺、生物化学节水技术为一体的集成化农业高效用水模式，初步建立了以“梯田、地膜、品种、施肥、水窖、微灌”为硬件特征的旱农增产技术新体系。使自然降水的利用率由原来的３０ ％ 提高到７０ ％ ，补灌水的利用率达到９０ ％ 。粮食作物的水分生产效率由平均６ ～９ ｋｇ／ｍｍ ．ｈｍ２ 提高到１２ ～１８ ｋｇ／ ｍｍ ．ｈｍ２ ，试验研究上供水效率已达到３０ ～６０ ｋｇ／ ｍｍ ．ｈｍ２ 。更多还原

【Abstract】 This paper is aimed at soil moisture issues in Gansu arid regions `and has created a high efficient water using model by integration of engineering, agronomic, biologic and chemical water saving techniques through the research on the catchment , storage and usage of the natural precipitation runoff. Preliminarily, it has established a new technical system that is characteristic of the combination of terrace, plastic film cover, varieties, fertilization, water storage cellars and micro irrigation for increasing dryland farming productivity . After the usage of the catchment agricultural techniques, the utilization ratio of precipitation has raised from 30% to 70%, the use efficiency of compensating irrigated water has reached to 90%, the average crop water use efficiency has raised from 6～9 kg/mm·hm 2 to 12～18 kg/mm·hm 2. In experiment, the crop water use efficiency of the irrigated water has reached to 30～60 kg/mm·hm 2.更多还原