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中双7号是中国农业科学院油料作物研究所利用复合杂交和多代连续定向选择品质分析选育而成，其组合为（Topas×84001）F1x821。1998年5月通过安徽省品种审定，定名为中油119。2000年通过湖北省品种审定，定名为中双7号。200l年通过全国农作物品种审定委员会审定。该品种单株角
Shuangshuang 7 was selected from the cross hybridization and continuous selection of multiple generations by the Oil Crops Research Institute of Chinese Academy of Agricultural Sciences and its combination was (Topas × 84001) F1x821. In May 1998, it was approved by Anhui Province and named CNPC 119.200 approved by the Hubei Province species, named Shuang Shuang on the 7th. 200l approved by the National Crop Variety Approval Committee. The variety of plantlets angle