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华优桂99是华南农业大学用华农A与恢复系桂99组配成的杂交组合。2001年通过国家和广东省农作物品种审定委员会审定。2000年引进韶关市,2001年面积2万亩,2002年2万亩,大面积示范结果,亩产在450kg,比当地当家常规稻增产20%以上。该组合生长势旺盛,分蘖力强,株型集中,有效穗数多,
Hua You Gui 99 is South China Agricultural University Hua Nong A and recovery Department Gui 99 group dubbed the hybrid combination. In 2001 through the national and Guangdong Provincial Crop Variety Approval Committee. Introduced in 2000 in Shaoguan City, 2001, an area of 20000 acres, 20000 acres in 2002, large-scale demonstration results, yield 450kg, more than 20% more than the local production of conventional rice. The combination of strong growth potential, strong tillering, plant type concentration, the effective number of spikes,