淠史杭工程自1958年开工以来,已经历26个年头,灌区从1959年开始,逐年扩大灌溉效益,目前灌溉面积已达800万亩,全部工程完成后设计灌溉面积安徽省部分为1026万亩,26年来累计灌溉面积1亿5千万亩,增产粮食内灌溉因素分摊按每亩100～150斤计,则效益已达150～225亿斤。国家投资截至1984年底共3.4亿元,群众投资约4亿元, 淠 Shi-hang project has been in operation since 1958, has experienced 26 years, the irrigation area from 1959 onwards, expanding irrigation benefits year by year, the current irrigation area has reached 800 million mu, all of the project is designed to irrigate the area after the Anhui Province is 1026 acres In the past 26 years, the total irrigated area has reached 150 million mu. According to the apportionment of irrigation factors in grain yield increasing by 100-150 kg per acre, the benefit has reached 150-225 billion kg. As of the end of 1984, a total of 340 million yuan of state investment was made and the masses invested about 400 million yuan.