南方稻区在早稻杂交优势利用方面虽取得了良好的效果,但由于推广的组合如威优35生育期偏长,影响连晚适时移栽,大面积推广受到限制。近年来新选育的杂交组合威优48-2(V 48-2),各地试种、示范,普遍表现熟期适中,高产稳产,种植面积迅速扩大。为加快该组合的推广应用,许多学者对该组合的特征特性、高产栽培技术、穗 Southern rice has gained good results in the utilization of early rice hybrids. However, the promotion of combination such as Weiyou 35 has a long growth period, which will affect the timely late transplanting and the large-scale promotion will be limited. In recent years, the newly-bred hybrid combination Weiyou 48-2 (V 48-2) has been tested and demonstrated in various places, showing generally moderate maturity, high and stable yield, and rapidly expanding planted area. In order to speed up the popularization and application of this combination, many scholars analyzed the characteristics of the combination, high-yielding cultivation techniques,