西北地区光热资源丰富,耕地多,人口少,发展旱地农业有较大潜力。但降水少而变率大,水资源缺乏,因此农业生产有较大的风险性和不稳定性。充分利用天然降水是发展西北旱地农业的出路所在,采取收集降水,增强土壤水库蓄水,防止水分无效蒸发,提高蓄水效率,提高降水和灌水利用效率是西北旱地农业持续发展的根本途径。 Northwest China is rich in light and heat resources, has arable land and a small population, and has great potential for developing dry land agriculture. However, less precipitation and variable rate, lack of water resources, agricultural production has a greater risk and instability. Making full use of natural precipitation is the way out for developing agriculture in dry land in Northwest China. It is the fundamental way for the sustainable development of dryland agriculture in Northwest China to collect precipitation, enhance soil reservoir storage, prevent water evaporation, improve water storage efficiency and increase precipitation and irrigation efficiency.