目前，三江平原多数大、中型涝区下游低洼易涝地块，虽经排涝治理，修建了排水渠系，但田间排水效果不好，有的春涝神不上地，有的欢涝大幅度减产，所以渍害仍是影响粮食单产不高的主要因素．笔者通过实践和分析，认为这些地方致涝原因有二：一是从涝区总体上看．承泄区承泄条 At present, most of the large and medium-sized floodplain areas in the lower reaches of the Sanjiang Plain, low-lying flood-prone block, despite drainage control, the construction of the drainage system, but the field drainage is not good, and some spring floods on the ground, and some floods drastic Reduce production, so waterlogging is still the main factor affecting the low yield of grain. Through practice and analysis, the author thinks there are two reasons for waterlogging in these areas: First, it is generally seen from the flood-prone area. Leakage discharge zone