论文部分内容阅读
我省水资源紧缺,平均每亩耕地占有量不足全国亩平均的十分之一,人均量相当全国人均值的八分之一。随着工农业生产的发展,又逢连年干旱,水资源的供需矛盾日趋突出。节约用水对缓解缺水至关重要。农业节水是节水的关键,因为农业用水占总用水量的80—90％。工程防渗节水是农业节水的重要措施之一,因此,需了解其现状和发展趋势,以便更好地发展。一、防渗节水工程现状七十年代以来,我省的工程防渗,有地上输水防渗地下输水防渗。到1987年6月底全省各种防渗输水长度达5914万米,控制灌溉面积1537万亩,防渗面
Shortage of water resources in our province, the average per mu of cultivated land less than the national one-tenth of the average per capita per capita equivalent to one-eighth of the national average. With the development of industrial and agricultural production, every successive years of drought, the contradiction between supply and demand of water resources has become increasingly prominent. Water conservation is essential to alleviate water shortages. Water saving in agriculture is the key to saving water because agricultural water accounts for 80-90% of the total water use. Seepage prevention and water conservation are one of the important measures for water saving in agriculture. Therefore, it is necessary to understand the status quo and development trend in order to develop better. First, the status of impervious water-saving project Since the seventies, our project seepage control, seepage on the ground impervious seepage water seepage. By the end of June 1987, various kinds of seepage prevention and water conveyance in the whole province had a length of 59.14 million meters and controlled irrigated area of 15.37 million mu. Anti-seepage surface