【摘要】 长江下游平原圩区是我国重要的农业产区 ,渍害严重制约着三麦产量的进一步提高 .本文通过对上海和南京二圩区三麦地下暗管排水试验和蒸渗仪试验结果的分析研究 ,得到三麦田间的降渍标准是雨后 3d根系密集层 ( 0～ 60cm)的水气比例控制在 8∶2以下 ,麦田高产经济最优的地下水位埋深为 0 86m更多还原

【Abstract】 In this paper, the data of field drainage experiment in Shanghai polder area and the data of lysimeter control test in Nanjing polder area are analyzed. The result shows that waterlogging reduction index for winter wheat and barley in the plain polder areas along Yangtze River is being 8∶2(ratio of water to air) in root accumulating zone ( h= 0～60cm) after 3 days of raining. The optimum economic ground water table for high yield is being 0 86m.更多还原