发展节水灌溉势在必行水利是农业的命脉，随着我国人口的不断增长，水已成为制约我国工农业生产发展的重要因素之一，如何节约用水，是摆在我们面前的一个十分重要的课题。一、我市水资源紧缺唐山市多年平均地表径流量６９．７５亿立方米，地下水贮量２０亿立方米，水资源... The development of water-saving irrigation is imperative Water conservancy is the lifeblood of agriculture, with the continuous growth of our population, water has become an important factor restricting the development of our country’s industrial and agricultural production, how to save water, is placed in front of us a very important The subject. First, the city’s water shortage Tangshan City, the average annual surface runoff of 6.975 billion cubic meters, groundwater storage 2 billion cubic meters, water resources ...