现代化工农业建设受制于水利。水利不仅是农业的命脉,也是工业的前提。水利建设的根本问题是个水资源问题。自然界中水有时～空分布的不平衡性和分配的不均匀性;有的地方水多,有的地方水少,天赋不一;有的季节和年份多,有的季节和年份少,旱涝无常;变差也有大有小,因而常发生自然灾害。水利建设的任务就 The construction of modern agriculture and industry is subject to water conservancy. Water conservancy is not only the lifeblood of agriculture, but also a prerequisite for industry. The fundamental problem of water conservancy construction is a water resource problem. Natural water is sometimes ~ empty distribution of uneven and distribution of non-uniformity; some places juicy, some places less water, different natural; some seasons and years, and some seasons and years less drought and flood Impermanence; variation is also large and small, so often a natural disaster. The task of water conservancy construction