北方干旱与防旱保墒技术—对灌溉农业的反思

我国北方降水不足，存在着旱灾易于发生的自然条件。近些年来，黄河年年断流。许多地区地下水位下降，给片面依赖灌溉发展农业的指导思想敲响了警钟。北方地区的农业有近万年的历史，在漫长的历史时期中，我国人民主要是依靠传统的防旱保墒技术，而不是灌溉，来发展农业生产的。

North drought and agricultural drought prevention techniques

Because of inadequate precipitation, north area is easily running into a drought In recent year's, Yellow River stops flowing seasonally year after year, and groundwater level falls down in many regions This makes us think twice the rationality of irrigating farm Our ancestor successfully farmed hear for ten thousand years They did rely mainly on traditional drought prevention and moisture preservation techniques, not irrigation Today's agriculture is insufficient in water supply just the same as before, so we should give full play to traditional drought prevention and moisture preservation techniques