我国水资源贫乏，为了合理利用水资源，实施丰产节水灌溉技术，提高大豆产量，增加经济效益。本试验利用盆栽方法，采用正交设计、积分回归统计分析结果，揭示了大豆需水变化规律，大豆灌溉水量、时间与产量效应关系，明确灌溉水量在不同时期的生产价值，确定了大豆各生育阶段适宜土壤水分标准和灌溉指标。 China’s water resources are scarce, in order to make rational use of water resources, implement high-yielding and water-saving irrigation techniques, increase soybean output and increase economic benefits. In this study, pot experiment was used to analyze the results of orthogonal design and integral regression. The results showed that the variation law of soybean water demand, the relationship between irrigation water quantity, time and yield effect of soybean, clarified the production value of irrigation water in different periods, Stage suitable soil moisture standards and irrigation indicators.