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两优669是安徽省农科院水稻研究所育成的两系杂交中籼新组合,具有优质、抗病能力强、高产、适应性较广等特点,2011年通过安徽省农作物品种审定。根据两优669父母本的特征特性,从制种田选择、合理安排父母本的播差期、培育多蘖壮秧、合理施肥、加强水分管理、及时花期预测、巧用“九二○”、及时防治病虫害等方面总结了其在江淮地区的高产制种技术。
Liangyou 669 is a new two-line indica hybrid rice bred by Rice Research Institute of Anhui Academy of Agricultural Sciences. It has the characteristics of high quality, strong disease resistance, high yield and wide adaptability. It passed the examination of crop varieties in Anhui Province in 2011. According to the characteristic characteristics of parents and parents in Liangyou 669, we should make reasonable arrangements for the sowing date of parents, cultivate more tillers, fertilize rationally, strengthen water management and timely flowering forecast, , Timely prevention and control of pests and diseases summed up its high-yielding seed production technology in the JAC region.