专为农田灌溉而建设的米山水库工加速向非农供水转移，从而挤占了灌区的水源，带来了农田灌溉用水紧张、灌区工程失修破坏加剧以及海水入侵、水环境恶化等诸多问题．在调查和分析这些问题的基础上，提出了解决问题的对策和建议，即：（1）全面推行节水灌溉；（2）挖潜配套，开辟新水源；（3）加强抗旱、土壤蓄水等水利土壤改良建设，提高灌区雨养农业的生产能力． The Mianshan Reservoir, which was specially constructed for farmland irrigation, accelerated the transfer of non-agricultural water supply, thus squeezing water from the irrigation districts, causing many problems such as farmland irrigation water shortage, deepening disrepair of irrigation works, seawater intrusion and deterioration of water environment. Based on the investigation and analysis of these problems, the countermeasures and suggestions for solving the problems are put forward, namely: (1) to promote water-saving irrigation in an all-round way; (2) to tap the potential and open up new water sources; (3) to enhance drought resistance and soil water storage Improvement of water conservancy and soil so as to improve the productivity of rain-fed agriculture in irrigation areas.