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连续3年在夏玉米的苗期、拔节期、抽雄吐丝期和灌浆期分别设置不同的淹水天数(2、4、6、8、10天),分析了淹水时期与历时对夏玉米生长发育及产量性状的影响。研究结果表明,拔节期淹水对玉米的株高和茎粗影响最大,其次是苗期,且随着淹水历时的增加呈降低趋势,苗期淹水前期虽影响较大,但涝渍解除后经过补偿,影响有所减小。抽雄吐丝期淹水前期对株高和茎粗有影响,但涝渍解除后经过补偿影响已不显著。当苗期、拔节期和抽雄吐丝期
The number of flooding days (2, 4, 6, 8 and 10 days) was set at the seedling stage, jointing stage, tasseling stage and filling stage of summer maize for three consecutive years respectively. The effects of flooding period and duration on summer maize Growth and Yield and Yield Traits. The results showed that waterlogging at jointing stage had the greatest effect on plant height and stem diameter of corn, followed by seedling stage, and decreased with the increase of flooding duration. However, waterlogged stage After the compensation, the impact has been reduced. At the early stage of flowering, the plant height and stem diameter were affected, but the effect of compensation after waterlogging relief was no longer significant. When the seedling, jointing and tasseling silkworm period