“威优402”(V20A×R402)是湖南省安江农校选配的杂交早稻迟熟组合。1991年3月经湖南省农作物品种审定委员会审定合格,可在全省双季稻区推广。 一、产量表现:1988年怀化地区区试,平均亩产505.7公斤,比对照湘早籼1号增产17.7%。1989～1990年两年参加湖南省区试,平均亩产516.9公 “Weiyou 402” (V20A × R402) is a late hybrid combination of early hybrid rice in Anjiang Agricultural School of Hunan Province. March 1991 by the Hunan Provincial Crop Variety Approval Committee approved qualified double-crop rice in the province to promote. First, the production performance: 1988 Huaihua area test, the average yield 505.7 kg, compared with the control Xiangzao Indica 1 17.7% increase. Two years from 1989 to 1990, he took part in the Hunan provincial trial, with an average yield of 516.9 public mu