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Ⅱ优桂33是我县利用湖南杂交水稻研究中心选育的Ⅱ32A作母本,3624-33作父本选配的杂交晚稻新组合。经两年制种和大田生产示范验证,有较高的利用价值和经济效益,是一个值得推广的晚稻迟熟高产杂交新组合。 一、杂种一代的特征特性 1、产量高 1990年全县Ⅱ优桂33示范栽培面积1500余亩。经抽样调查,一般亩产400～500公斤,高达580多公斤。与同等条件下汕优桂33相比产量相当或略高。 2、经济性状好 Ⅱ优桂33分蘖力强,单株分蘖力达3.09～3.32;有效穗多,成穗率高,每穗粒数比汕优桂33略多;结实率
Ⅱ You Gui 33 is a new combination of late hybrid rice Ⅱ32A selected by Hunan Province Hybrid Rice Research Center and 3624-33 as its male parent. After two years of seed production and field demonstration demonstration, has high utilization value and economic benefits, is a worthwhile promotion of late maturing late-maturing high-yielding hybrid combination. First, the characteristics of a hybrid generation 1, high yield 1990 county Ⅱ You Gui 33 demonstration cultivation area of more than 1,500 acres. After a sample survey, the average yield per mu 400 to 500 kilograms, up to 580 kilograms. Compared with Shanyou Gui 33, the output is quite high or slightly higher. 2, good economic traits Ⅱ You Gui 33 strong tillering ability, tillering power per plant 3.09 ~ 3.32; effective panicles, into a high percentage of spikelets, grain number per spike 33 slightly more than Shanyou; seed setting rate