Core Viewpoint - The article highlights the successful operation and management of the Henan Province's constant pressure irrigation project in Jiajian County, which has been in service for 26 years, showcasing its significant contributions to agricultural productivity and water conservation [1][2][3]. Group 1: Project Overview - The constant pressure irrigation project was established in 1984, designed to irrigate 6,397 acres, and has since expanded its irrigated area to 102,000 acres with ongoing projects [5]. - The project has saved 40 million cubic meters of water and increased grain production by 90 million jin, yielding a comprehensive economic benefit of 420 million yuan, which is over 270 times the initial investment [1][5]. - The project utilizes advanced irrigation techniques, achieving a high irrigation water utilization coefficient of 0.88, and has transitioned from traditional irrigation methods to more efficient micro-spray and drip irrigation systems [7][8]. Group 2: Management and Maintenance - Effective management has been a key factor in the project's longevity, with a dedicated management team established during the project's design phase, ensuring maintenance and operational efficiency [3][6]. - The project faced challenges such as aging infrastructure and funding shortages, but proactive maintenance and community involvement have helped sustain its operations [3][6]. - The establishment of the Farmers' Water Users Association has empowered local farmers to participate in water management, enhancing the project's sustainability and efficiency [8]. Group 3: Economic and Social Impact - The irrigation project has significantly boosted local agricultural productivity, with crop yields increasing by 150 kilograms per mu for wheat and substantial income growth for farmers [6][7]. - The project has also improved local environmental conditions, demonstrating a successful integration of agricultural, ecological, and community needs [5][7]. - The use of modern technology and community engagement has led to better water management practices, ensuring that the benefits of the irrigation project are maximized for local farmers [8].