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水利是农业的命脉,水利建设不仅在国民经济中占有重要的位置,也是国民经济和社会文明进步的一个重要标志。30年来,由于人口的增长,我国人均耕地面积减少了40%。在这种情况下,我国粮食生产能够突破6000亿斤大关,这和30年来各地兴修了数以万计的水利工程,使水资源得到大力开发利用是分不开的。我国水资源总量虽然丰富,但由于地理位置和气侯影响造成地区分布不均,以致水早灾害频繁,影响农业生产的发展。我国人均水量并不丰富,只相当于世界人均水量的1/4,是世界上人均水平最低的国家之一。我国耕地平均用水量出低于世界平均水平,只有世界平均数的一半,而且南北方差异极大。据资料统计,1979年是我国粮食总产量最高的一年。这一年,北方地区水
Water conservancy is the lifeblood of agriculture. Water conservancy construction not only occupies an important position in the national economy, but also an important symbol of the progress of the national economy and social civilization. In the past 30 years, due to population growth, the per capita arable land area in China has been reduced by 40%. Under such circumstances, the grain production in our country can exceed the mark of 600 billion kilograms, which is inseparable from the tens of thousands of water conservancy projects that have been completed over the past 30 years so that water resources can be vigorously exploited and utilized. Although the total amount of water resources in our country is abundant, due to the uneven geographical distribution caused by the geographical location and climate impact, frequent flood disasters have affected the development of agricultural production. China’s per capita water consumption is not abundant, only about 1/4 of the world’s per capita water consumption, making it one of the lowest per capita countries in the world. The average cultivated land use in China is below the world average, only half the world average, and there is a big difference between north and south. According to statistics, the year 1979 was the highest total grain output in our country. This year, northern water