“汕优窄八”系贵定农科所1976年选育而成的杂交水稻早熟组合(其恢复系“窄八”系贵定农科所1975年从窄叶青八号×八四矮534杂交后代169稳定株系中测交选育而成)。经76-78年三年鉴定表现早熟高产、结实性好、抗逆性强、综合性状较优等特点。1979年在海拔1000公尺以上的龙里、福泉、贵定、独山、瓮安、长顺和贵定农科所等七个点进行了近百亩的生产示范,并参加了黔南州十三个点的区域试验和贵州省省区试,均表现较好。据贵定、龙里、福泉等三县六个点101.76亩统计,平均亩产1027.1斤,比一般常规良种增产两成左右;80年种植76.96亩平均亩产986.22斤,产量与威优六号相当,但早熟7-8天。 “Shanyou narrow eight” Department of Guidong Agricultural Institute of 1976 breeding of hybrid rice premature combination (the restorer system “narrow eight” Department of Guiding Academy of Agricultural Sciences in 1975 from Narrow Ye Qing eight × 84 four dwarf 534 Crossbred 169 stable strains of cross-breeding test). After 76-78 three years of identification showed early maturity and high yield, good firmness, strong resistance, superior comprehensive characteristics and other characteristics. In 1979, nearly 100 mu of production demonstration was carried out at seven sites including Longli, Fuquan, Guiding, Dushan, Weng’an, Changshun and Guiding Agricultural Institutes at an altitude of over 1000 meters and participated in Qiannan Prefecture Ten Three-point regional test and Guizhou provincial test, all performed well. According to Guiding, Longli, Fuquan County, six counties 101.76 acres of statistics, the average yield of 1027.1 kg, than the average conventional yield about two percent; 80 years planted 76.96 mu average yield of 986.22 kg, the output and Granville good on the 6th Pretty, but premature 7-8 days.