The article discusses how to improve irrigation scheduling and water use efficiency in crop production in northwestern China. The researchers developed a plan for water management and proposed a strategy for irrigation scheduling. By using the Penman method, they calculated water requirements for different crops and optimized water use efficiency. They introduced a new index called water niche suitability to determine the best irrigation scheduling for specific areas. The study found that there is potential to optimize water resources in Ningxia and that the proposed irrigation scheduling can help improve water management decisions in the region.