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dui shan xi sheng nong ye jie shui fang shi de chu bu tan tao
Pages: 31-32
Year: Issue:  1
Journal: Water Saving Irrigation

Keyword:  喷灌丘陵山区黄河中游喷滴灌耕地面积灌溉面积年平均降雨量管灌技术地下水地表水;
Abstract: <正> 山西地处黄河中游。在这片覆盖着深厚黄土的高原上,有山地、丘陵、盆地及台地,大都在海拔1000m以上。年平均降雨量400~500mm,水的补给来源极为贫乏。地下水少而分散,埋深大;地表水极易流失,十年九旱。全省耕地面积5800万亩,水地面积仅
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