一个正常的玉米雄穗通常能产生 2 0 0 0 -3 0 0 0万粒花粉 ,远远超过雌穗正常授粉的需要。但是 ,在开花期间气候异常或管理不当 ,会造成花粉失去活力、花丝无法吐出或干枯、雌雄花期不遇等 ,从而产生秃顶、缺粒现象 ,这不仅降低玉米产量 ,而且对品质也有一定的影响。因此要进一 A normal maize tassel usually produces 20,000 to 300,000 pollens, far exceeding the normal pollination needs of the ear. However, abnormal weather or mismanagement during flowering will result in the loss of viability of pollen, the inability of filaments to spit out or dry, and the frequent flowering of male and female flowers, resulting in baldness and lack of grain. This not only reduces corn yield but also affects quality. So enter one