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1977年罗定县在大搞三季稻的同时,在生江、素龙、附城等公社进行了三季稻配套三系杂交种试验,获得成功.试验面积共180.07亩,品种搭配形式分:“优-优-优”(即早、中晚造都用“南优二号”及“汕优二号)、’优一常(常规早熟种)-优”、“优-优-常(早熟)”、“优-优-粳”、“常(早熟)-优-优”、“优-常(早熟)-常(迟熟)”、“常(中熟)-常(早熟)-优”、“常(早熟)-优-粳”、“常-常-常”等9种.结果以
In 1977, while engaging in three-season rice paddy in Luoding County, three-line hybrid rice experiment with three-season rice was successfully conducted in communes such as Shengjiang, Suilong and Fucheng, with a total area of 180.07 mu. “Excellent - gifted - excellent” (that is, early or late are made with “Nanyou two ” and “Shanyou two), gifted a regular (precocious species) Excellent - Excellent - Normal (Prematurity), Excellent Excellent - Japonica, Normal (Premature) - Excellent - Excellent, , ”Normal (Prematurity) - Normal (Prematurity) - Excellent“, ”Normal (Prematurity) - Excellent - Japonica“, ”Normal“ - ”Normal"