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江四优992系江西省农业科学院水稻研究所采用自选不育系江农早4号A(G4A)与自选恢复系R99257测配而成,2004年通过江西省农作物品种审定(品种审定号:赣审稻2004021)。江四优992是江西省内自主选育的早熟、高产、优质、抗性较强的优质晚稻品种。2006年,江四优992已成为江西省主推
Jiang Siyou 992 Department of Jiangxi Academy of Agricultural Sciences Institute of Rice using optional sterile line Jiangnong Zao 4 A (G4A) and the optional restorer R99257 measured by the system, in 2004 through the crop varieties in Jiangxi Province Certification (variety approval number: Gan Trial rice 2004021). Jiang Siyou 992 is an early-maturing, high-yielding, high-quality and resistant high-quality late-season rice independently selected in Jiangxi Province. In 2006, Jiang Siyou 992 has become the main push in Jiangxi Province