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一、育种概况建国以来,我省水稻育种工作,大体经历了四个时期: 第一时期:从1949年至1955年,一季稻为主时期,重点整理了4,700份农家品种,鉴定和推广其中比较早熟、高产的早稻五十子、六十子,中稻三扎齐、天生稻、鸡爪籼、大叶稻、靠山黄(滁县地区)、齐头白(沿淮两岸),晚稻小冬稻、小红稻、小麻稻、麻籼晚等品种,引进鉴定推广了一些良种,如中籼胜利籼、中农4号等.当时的高秆良种,一般亩产400～500斤.全省中稻单产高于早、晚稻,呈现“中高、早晚低”的情况.
I. Introduction to Breeding Since the founding of the People’s Republic of China, rice breeding work in our province has generally gone through four periods: The first period: From 1949 to 1955, during the period of one-season rice planting, 4,700 farm-type cultivars were focused on identifying and popularizing the comparison among them Early maturing and high-yielding early rice fifty, sixty, middle rice three Zha Qi, natural rice, chicken claw indica, big paddy rice, backing yellow (Chu County), Qi head white (along the Huaihe River), late rice small winter rice, Rice, small hemp rice, Indica indica and other varieties, the introduction of identification to promote a number of varieties, such as indica victory Indica, Zhongnong 4, etc. At that time the high stalks, general mu 400-500 kg per hectare yield higher than the province Early and late rice, showing “high, morning and evening low ” situation.