夏玉米从抽雄开花到成熟为后期(亦称花粒期)。此期田间管理的中心任务是为授粉结实创造良好的环境条件,保持最大绿叶面积,延长根和叶生理功能,防止青枯、早衰,保证活叶成熟,以达到粒多、粒饱之目的。 Summer maize from tasseled flowering to maturity for the late (also known as pollen stage). The key task of field management in this period is to create good environmental conditions for pollination and fruiting, maintain the maximum green leaf area, extend the physiological functions of roots and leaves, and prevent the withered, premature senility and mature leaves in order to achieve more grain and full grain.