余赤231—8系湖南农学院作物育种教研室1972年用余晚6号作母本、赤块选作父本杂交,经多代选育,于1975年育成的一个中熟、丰产、优质、晚籼新品种。1977、1978年参加全省区域试验,产量均居供试品种首位,分别比对照种洞庭晚籼增产13.13%和6.1%。1978、1979年参加南方稻区区试,分别比对照种赣南晚13号增产3.85%(名 YU Chi 231-8 Department of Crop Breeding, Hunan Agricultural College In 1972, I spent six nights on the evening as the female parent and the red parent selected as the male parent. After several generations of breeding, a medium-yielding, high-yielding, Late indica new varieties. 1977, 1978 to participate in the province’s regional test, the highest yield of varieties of the first test, respectively, compared with the control varieties of late indica rice yield 13.13% and 6.1%. 1978, 1979 to participate in the southern rice area test, respectively, compared with the control of late Gannan No. 13 yield 3.85% (name