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1 华北地区水资源现状我国的水资源在地域分布上极不平衡,降雨在年内分布不均匀,特别是在华北地区,降雨集中的6～9月,多年平均降雨量为年降雨量的70%～80%,春冬季节,降雨常不能满足作物生长的要求,春旱严重时,甚至影响到播种出苗。其水问题突出表现为“患难忧愁”四个字,即:水多为患、水少为愁、水脏为忧、水环境为难。而且随着我国城市化水平从30%增大到50%,将挤占大量农业用水,农业灌溉用水的
1 Present situation of water resources in North China The water resources in China are extremely uneven in geographical distribution. Rainfall is unevenly distributed during the year, especially in North China from June to September when the rainfall is concentrated. The average annual rainfall is 70% of annual rainfall. ~ 80%, the spring and winter seasons, rainfall often can not meet the requirements of crop growth, severe drought, and even affect the sowing seedlings. The water problem is prominently manifested as “suffering sad ” four words, namely: juicy, less water worry, water dirty worry, water environment difficult. And as China’s urbanization level increased from 30% to 50%, it will squeeze a large amount of agricultural water, agricultural irrigation water