拔节抽雄期夏玉米耗水量与玉米叶面积系数呈正相关；
Summer maize water consumption varied exponentially with maize leaf area index at the filling stage.
玉米抽雄期和开花期的不育系与保持系、恢复系叶片中的酶谱差异明显。
As the maize development in tasseling and flowering, the peroxidase zymogram in the male sterility line significantly differed from that in the maintainer and restorer line.
拔节—抽雄期是低温冷害影响冬玉米产量的关键期，另一个次关键期为抽雄—开花时段。
Jointingheading was the most critical stage in which cold damage affected the yield of winter sowing maize.
糯玉米在抽雄期前，氮素主要集中在叶片，分配率达45.16%，茎秆中的分配率次之，为33.16%； 叶鞘中再次，为11.01%，三营养体共计占89.33%。
Before tassel emerge, the nitrogen amount was mainly distributed in leaves and followed by stem and sheath with 45.16, 33.16 and 11.01%, totally 89.33%, respectively.
糯玉米在抽雄期前，氮素主要集中在叶片，分配率达45.16%，茎秆中的分配率次之，为33.16%； 叶鞘中再次，为11.01%，三营养体共计占89.33%。
Before tassel emerge, the nitrogen amount was mainly distributed in leaves and followed by stem and sheath with 45.16, 33.16 and 11.01%, totally 89.33%, respectively.
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