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天优华占(天丰A/华占)是中国水稻研究所、中国科学院遗传与发育生物学研究所和广东省农业科学院水稻研究所合作育成的杂交水稻新组合,2008年3月通过了国家农作物品种审定委员会审定(国审稻2008020),2012年被农业部确认为超级杂交稻示范推广品种并列为主导推广品种。2009年开始在上犹县试种,2010年进行示范种植,2011～2013年大面积推广,表现出高产、优质、抗性较强、适应性广、生育期适中等特点。
Tianyouhuazhan (Tianfeng A / Huazhan) is a new hybrid rice combination developed by China Rice Research Institute, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences and Rice Research Institute of Guangdong Academy of Agricultural Sciences. In March 2008, it passed the national Crop Variety Approval Committee (National review rice 2008020), in 2012 by the Ministry of Agriculture identified as super hybrid rice model promotion varieties tied for the promotion of varieties. In 2009, we started trial planting in Shangyou County, carried out demonstration planting in 2010, and popularized it in 2011-2013, showing the features of high yield, high quality, strong resistance, wide adaptability and moderate growth period.