记者了解到，淠史杭灌区现代化改造工程估算总投资192.6亿元，将改善灌溉面积720万亩，建设总 工期48个月。工程主要建设内容为干支渠改造、渠系连通、排水沟治理、尾部补水泵站新建与改扩建、 渠系建筑物配套及信息化建设等。 据介绍，作为新中国成立后兴建的全国特大型灌区之一，淠史杭灌区设计灌溉面积1198万亩，横跨 长江、淮河两大流域，是皖西、皖中地区防洪安全、粮食安全、供水安全和生态安全的战略支柱。灌区 投入运行60多年来，累计灌溉供水超1800亿立方米，粮食增产超1700亿斤，保障了近1400万城乡人口的 饮水安全。 新华社北京1月29日电（记者 魏弘毅）记者从水利部获悉，安徽省淠史杭灌区现代化改造先行建设 工程29日在六安市霍邱县开工。 "十五五"期间，淠史杭灌区现代化改造聚焦水资源优化配置、骨干渠系治理、数字孪生灌区建设、 农业节水增效等核心任务，将重点破解工程老损渗漏、供水矛盾日趋突出、管理手段传统等短板弱项， 为高水平建设江淮粮仓贡献坚实水利支撑。 ...

Core Viewpoint - The construction of major water conservancy projects in Sichuan, including the Gongxi River aqueduct and the Tizi Kou irrigation area, is progressing steadily, enhancing the province's water supply security and supporting agricultural needs. Group 1: Project Progress - The Gongxi River aqueduct, part of the Tizi Kou irrigation area, is 708 meters long, with ongoing construction of the 42-meter span and double-arch structure [1] - The construction of the double-arch box for the Gongxi River aqueduct, which is the most challenging part of the project, has been completed [2] - As of December 2025, the Tizi Kou irrigation area project has completed 143 main tunnels and 28 branch tunnels, with a total investment of 113.04 billion yuan [3] Group 2: Investment and Economic Impact - In 2025, Sichuan completed water conservancy investments of 702 billion yuan, representing a year-on-year increase of 5%, playing a crucial role in stabilizing investment and growth [3] - The ongoing construction of the Shitan Reservoir irrigation area aims to ensure water supply for spring farming, with multiple channels undergoing renovation [5] Group 3: Modernization and Efficiency - The project includes the modernization of irrigation systems, with efforts to implement an information platform for automated control of gates and valves, improving water management efficiency [5] - A total of 75 medium-sized irrigation area renovation projects and 16 new small irrigation areas are planned during the 14th Five-Year Plan period, further improving the irrigation and drainage system [7]

Core Viewpoint - The modernization project of the Shishihang irrigation area in Anhui Province has received approval from the provincial development and reform commission, marking a new phase in its modernization efforts [1] Group 1: Project Overview - The Shishihang irrigation area is the largest irrigation area built after the founding of New China and has been included in national irrigation development plans and key water conservancy projects [1] - The project involves three cities (Lu'an, Hefei, and Huainan) and 15 counties, with major construction activities including the renovation of 508 main and branch canals, totaling 3,828.11 km, and the construction of 37 new or expanded water supply pump stations [1] Group 2: Investment and Impact - The estimated total investment for the project is 19.26 billion yuan, with a construction period of 48 months [1] - Upon completion, the irrigation guarantee rate will exceed 80%, the integrity rate of key projects will reach over 95%, and the irrigation water utilization coefficient will improve to above 0.58 [1] - The project aims to enhance irrigation coverage by 7.2 million acres, increase annual water-saving capacity by 243 million cubic meters, and boost annual grain production capacity by 576 million jin [1] Group 3: Water Resource Management - The project will further improve the layout of the irrigation area and establish a "four-water mutual assistance" water resource allocation system, enhancing the optimization of water resource allocation and supply security in the Jianghuai watershed region of Anhui Province [1]

Core Insights - The Ministry of Water Resources reported that the national irrigated farmland area has reached 108.6 million acres, with summer grain production accounting for 88.85% of the total summer grain output by 2025 [1] Group 1: Irrigation and Agricultural Production - Water resources are crucial for agriculture, with the current irrigated farmland area representing approximately 56% of the total cultivated land, producing over 80% of the country's grain [1] - The average yield per acre in large and medium-sized irrigation areas is 1.5 to 2 times higher than the national average, and 2.5 to 3 times higher than rain-fed farmland [1] Group 2: Infrastructure Development - The Ministry of Water Resources has supported the construction of 15 new large irrigation areas, with a designed irrigation area of 11.3 million acres, and 145 modernization projects for large and medium-sized irrigation areas, which will restore and improve nearly 20 million acres of irrigation area [1] - The implementation of 70 key regional drainage projects is underway, along with the advancement of digital and information management in large and medium-sized irrigation areas [1] Group 3: Water Conservation Efforts - Agriculture is a major water consumer but also has significant water-saving potential, with the area of water-saving irrigation projects reaching 63.8 million acres, a 12.5% increase compared to the end of the 13th Five-Year Plan [2] - The average water usage per acre for irrigated farmland has decreased to 342 cubic meters, a 4% reduction from the end of the 13th Five-Year Plan [2]