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Ⅰ优 4761 Ⅰ优4761是高产迟熟籼型三系杂交稻新组合,1998年通过贵州省农作物品种审定委员会审定。一般亩产于谷600公斤左右,高的可达700公斤,比汕优63增产5％～10％。株高100厘米,每亩有效穗19万左右,穗实粒113～128粒,千粒重27克,结实率80％。抗寒性和抗稻瘟病性较强。生育期与汕优63相当,凡适宜种植汕优63的地区均可种植。栽培方法参照汕优63。
Ⅰ You 4761 Ⅰ You 4761 is a new combination of high yield and late maturity indica three-line hybrid rice. It was approved by Guizhou Province Crop Variety Approval Committee in 1998. General yield per mu in the valley about 600 kg, up to 700 kg high, yield increase Shantou 63 5% ~ 10%. Plant height of 100 cm, effective per acre 190000, spike grain 113 ~ 128, grain weight 27 grams, 80% seed set. Cold hardiness and resistance to blast. Growth period and Shanyou 63 is quite, where suitable for planting Shanyou 63 areas can be planted. Cultivation refer to Shanyou 63.