D297A是四川农大水稻研究室培育的一个带粳稻血缘的新不育系,1986年开始试配杂交种,1987年D297×明恢63(暂名D优10号)在全国六省区共计制种1900多亩,1988年在全国示范面积已达20万亩以上,且绝大多数地区反映比汕优63增产或显著增产,1988年全国已配制这一组合1.4万亩左右,1989年的示范面积和制种面积都将有一个迅速的扩大。 D297A is a new male sterile line with japonica inheritance cultivated by Sichuan Agricultural University Rice Research Laboratory. In 1986, it began to test hybrids. In 1987, D297 × Minghui 63 (tentative name D You 10) 1900 mu, in 1988 the demonstration area in the country has reached more than 200,000 mu, and the vast majority of areas reflect a higher yield than Shanyou 63 or significant increase in 1988, the country has formulated this combination of about 14,000 mu, the demonstration area in 1989 And seed production area will have a rapid expansion.