玉米株型在高产育种中的作用 Ⅰ.株型的增产作用

EFFECT OF PLANT-TYPE ON MAIZE BREEDING FOR HIGHER YIELDS 1. THE ROLE OF PLANT-TYPE IN INCREASING YIELDS

利用平展型和紧凑型两类杂交种,进行人工改型,证明株型是影响产量的重要因素;紧凑型育种,是融合了配合力和群体光能利用两个方面的理论;由于紧凑型玉米群体光分布特性好于平展型品种,所以,承受的叶面积指数高,生产潜力大。

The plant type was proved to be a more important element for grain yields of maize by artificially altering plant types. The compact type had better light distribution in canopy thus possessing higher leaf area index and more potential productivity than the horizontally spreading type.