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四川省玉溪河引水灌溉工程,是70年代兴建的大型水利工程,设计灌溉面积86.64万亩,完成总投资2.02亿元。从1978年工程发挥效益以来,灌溉面积由31.24万亩扩大到现在的58.86万亩。以2亿元的代价换得了每年约7亿吨水。这是水的投资价值。水的生产过程,同工业产品一样,也具有生产、交换、分配、消费四个过程。修建和管理进水闸、引水渠、拦河坝等工程,引、提、拦、蓄水,这是水的生产过程;对水库、渠
The Yuxi River diversion irrigation project in Sichuan Province is a large-scale water conservancy project built in the 1970s with an designed irrigation area of 866,400 mu and a total investment of 202 million yuan. Since the project started its effectiveness in 1978, the irrigated area has expanded from 314,200 mu to 588,600 mu now. At a cost of 200 million yuan for each year about 700 million tons of water. This is the investment value of water. The production process of water, like industrial products, also has four processes of production, exchange, distribution and consumption. Construction and management of intakes, diversion channels, barrage and other projects, cited, mentioning, barricade, water storage, which is the water production process; for reservoirs and drainage