三江平原位于我国的东北部,总土地面积10.87万km~2,低湿地占总面积的40％左右,而低湿耕地占该地区总耕地面积的59％左右。低湿地以土壤肥沃,资源丰富为主要特点,有利于生态农业的发展。但是,低湿地旱涝灾害频繁,粮、豆产量低而不稳,波动幅度较大。如何综合利用水土资源,开发治理低湿地,是本文研究的主要内容。 The Sanjiang Plain is located in the northeastern part of China with a total land area of ​​108,700 km ~ 2, low and wetlands accounting for about 40% of the total area, while low and wet cultivated land accounts for about 59% of the total cultivated area in the area. Low-moisture land is characterized by fertile soil and abundant resources, which is conducive to the development of ecological agriculture. However, droughts and floods in low-humid areas have frequent disasters, with low and unstable grain and bean production and large fluctuations. How to comprehensively utilize soil and water resources and develop and control low wetlands are the main contents of this paper.