进行了两年的田间试验,以确定土壤肥力及追施N肥量对减轻夏玉米涝害的作用.试验结果指出,淹水5天后玉米幼苗生长非常缓慢,但提高土壤肥力和追施N肥对恢复受涝幼苗生长有明显的作用.同不施N肥小区相比,淹水后每亩追施15和30公斤硫酸铵在中肥地上增产13.8%和22.8%,在高肥地上增产9.3%和11.2%.但两种地力水平之间产量差异不显著. Two years of field experiments were conducted to determine the effects of soil fertility and topdressing N fertilizer on alleviating summer maize waterlogging.The results showed that the growth of maize seedlings was very slow after 5 days of flooding but the soil fertility and topdressing N fertilizer Compared with no N fertilizer application, 15 and 30 kg of ammonium sulfate topdressing 13.8% and 22.8% of topsoil, respectively, while topsoil yield increased 9.3% % And 11.2%, respectively, but there was no significant difference in yield between the two geotechnical levels.