有些地区,由于自然条件恶劣,长期干旱炎热,茫茫沙漠,淡水资源非常贫乏。正如一句俗语所说的:“水贵如油”,连生活用水都无法解决,当然更谈不上农业用水了。在这种情况下,如果不采取有力措施,要想站稳脚跟和发展生产,几乎是不可能的事。为了应付严酷的现实,近年来,许多国家都开? In some areas, due to harsh natural conditions, prolonged drought, hot deserts, deserts, and poor fresh water resources. As a saying goes: “Water is expensive,” and even domestic water cannot be solved, let alone agricultural water. Under such circumstances, if we do not take effective measures, it is almost impossible to gain a firm foothold and develop production. In order to cope with the harsh reality, in recent years, many countries have opened?