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杂交稻D297优67是个比汕优63抗病高产、制种产量高、适应性广,带有粳型血缘中晚稻兼用杂优新组合。至1992年,全国13个省市示范面积20万亩,并有迅速发展的前景。 一、选育过程与试验经过 福建省尤溪县管前农技站于1986年用D297A与明恢63、67、72、78等恢复系配组,并于1987年将新配的D297优63、67、72、78新组合,与汕优63进行品试;同时在管前村用D297优63、D297优67作单晚试种,并用汕优63进行简比,结果D297优67居首位,亩产592公斤,比汕优63亩增56.3公斤,增产10.5％,D297优63其次,亩产573.6公斤,比汕优63亩增42.3公斤,增产7.8％。通过品试与简比,发现D297优63、67两个新组合表现抗病性强、分蘗力强、丰产性好、制种产量高等杂种优势。
Hybrid rice D297 You 67 is a disease-resistant high-yielding cultivar Shanyou 63, with high seed yield and wide adaptability, with a new hybrid combination of late japonica and japonica blood relatives. By 1992, the demonstration area of 20 million mu in 13 provinces and cities nationwide had a rapid development prospect. First, the breeding process and experiment After Youxi County, Fujian Province Guanqian Agronomy Station in 1986 with D297A and Minghui 63,67,72,78 and other restorers with the team, and in 1987 will be the new distribution of D297 You 63 , 67,72,78 new combinations, and Shanyou 63 for product testing; at the same time in Guanqiancun D297 excellent 63, D297 excellent 67 for single-night test and Jane ratio with Shanyou 63, the result D297 gifted 67 Bit, yielding 592 kilograms per mu, 56.3 kilograms more than Shanyou 63 acres, an increase of 10.5%, D297 excellent 63 Second, 573.6 kilograms per mu, more than Shanyou 63 acres by 42.3 kilograms, an increase of 7.8%. Through the product testing and Jane ratio, it was found that two new combinations of D297, You 63 and 67 showed the superiority of disease resistance, strong tillering ability, good yield and high seed yield.