论文部分内容阅读
玉米种子在吸收膨胀和主胚根开始伸长时对涝害最敏感,淹水2—4天可降低出苗率50%以上.高温、延长淹水期和增加淹水层均会明显加重涝害.受涝后幼苗生长弱,发育慢;根系受害程度重于地上部.早播和起垄播种有助于预防或减轻夏玉米的涝害.
Maize seeds are most sensitive to waterlogging when they are absorbed and expanded and the main radicle begins to elongate, and can reduce the emergence rate by more than 50% when they are flooded for 2-4 days.High temperature, prolonging the flooding period and increasing the flooding layer will obviously increase the waterlogging .The seedlings grew weakly and developed slowly after waterlogging.The degree of root damage was heavier than that of aboveground parts.The sowing and sowing planting could help prevent or reduce the waterlogging of summer maize.