水稻直化育种是在矮化育种的基础上,进一步改善株型结构和生理特性,使茎、叶、穗直立化,绿色化,有效地提高群体光能利用率,增加经济产量。矮化育种实践证明,株型的变革,导致产量突破性地提高。近年来,我省育成的“窄叶青”、“青二矮”和“桂朝”等良种,在株型 On the basis of dwarf breeding, rice straightening breeding further improves plant type structure and physiological characteristics, and makes stems, leaves and spikes erect and green, thus effectively increasing population light energy utilization rate and increasing economic output. Dwarf breeding practice has proved that the type of plant change, leading to a breakthrough to increase production. In recent years, our province bred “narrow leaf green”, “green two short” and “Gui Chao” and other varieties, plant type