Ⅱ优802系四川省农科院生核所采用杂交——辐射——花药培养的水稻综合育种技术育成的四川省第一个杂交稻新品种。1996年4月通过四川省农作物品种审定委员会审定。该品种1994～1995年引进我市,两年区试13点次平均亩产594.8kg。1995年我们试制744.3亩。平均亩产仅226.4kg,1996年我们组织市农科所、市科委及10区县种子公司联合攻关,制种1718.9亩,平均亩产达278.5kg。1997年制种2047.8亩,平均亩产高达313.9kg。制种质量经省种 Ⅱ You 802 Department of Sichuan Academy of Agricultural Sciences nucleation hybridization - radiation - anther culture of rice breeding technology bred Sichuan Province’s first new hybrid rice. April 1996 through the Sichuan Crop Variety Approval Committee. The variety was introduced into our city from 1994 to 1995, and the average yield per mu was 594.8kg at 13 o’clock in two years. In 1995, we trial-produced 744.3 mu. The average yield per mu is only 226.4kg. In 1996, we organized a joint research by the Municipal Agricultural Science Institute, the Municipal Science and Technology Commission and the 10 districts and counties and seed companies to produce 1718.9 mu of land, with an average yield of 278.5kg per mu. In 1997 planted 2047.8 acres, the average yield of up to 313.9kg. Seed production by the provincial species