水是世界社会经济发展的一个重要动力。然而，它是一种有限的资源。现今世界有1／3的人口由于水被过度使用而经受着中等到严重的水资源缺乏。据估计，到2025年世界人口的2／3将生活在面临缺水的地区。对于经济来说，节约用水是非常必要的。农业作为最大的用水部门也是最大的传 Water is an important driving force in the socio-economic development of the world. However, it is a limited resource. One-third of the world’s population today is experiencing moderate to severe water scarcity due to overuse of water. It is estimated that by 2025, two-thirds of the world’s population will live in areas facing water shortages. For the economy, water conservation is necessary. Agriculture as the largest water sector is also the largest pass