对典型剖面进行研究。结果表明，农田渍害是制约该地区作物高产的重要因素。渍害农田土壤地势低平，冬季地下水位５０ｃｍ左右；土壤颗粒匀细，＜００５ｍｍ颗粒在９０％以上；孔隙性差，无效孔隙＞４５％；粘闭滞水，高含水量时呈正常收缩，有重力水滞留；渗漏量＜２ｍｍ／日；还原性强；土壤Ｃ／Ｎ比高，供氮强度低等特性 Research on typical sections. The results show that farmland waterlogging is an important factor restricting the high yield of crops in this area. The soil in the soil was low and flat in winter. The groundwater level in winter was about 50cm. The soil particles were fine, the diameter of <005mm was more than 90%, the porosity was poor and the void was> 45%. The sticky stagnant water and normal contraction , There is gravity water retention; leakage <2mm / day; strong reducing; soil C / N ratio, low nitrogen intensity characteristics