高产杂交稻新组合Ⅱ优3003的选育与应用

高产杂交稻新品种Ⅱ优3003，系四川省宜宾市农科所水稻研究室1999年用三系不育系Ⅱ-32A，与优质重穗型强恢复系宜恢3003组配而成。2002年参加四川中籼迟熟B组区试，平均产量8.49t/hm2，比对照汕优63增产5.91%，居试验第一位；2003年参加四川省中籼迟熟A1组区试, 平均产量8.246t/hm2，比对照汕优63增产3.92%，同年参加四川省生产试验, 平均产量8.664t/hm2，比对照汕优63增产9.31%。该组合有株型佳，分蘖力强，稳产丰产，优质抗病，适应性好等特点，适应中国南方稻区的平坝、丘陵区及汕优63种植的地方种植。

Breeding and Utilization of New High-yielding Hybrid Rice Combination II You3003

The hybrid rice of high yield Ⅱ You 3003 is Yibin Region Agricultural Research of Sichuan in 1999 does not give birth to department with 3 departments Ⅱ-32A，It is that suitable extensive 3003 groups matches to resume with the high quality heavy type winner of ear of grain and become。In 2002 attends Sichuan Xian late deeply B group district examination，Average output 8.49t/hm2，Than for shine Shan You 63 increases production 5.91%，House testing the first place；In 2003 attends Sichuan province Xian late deeply A1 group district examination, Average output 8.246t/hm2，Than for shine Shan You 63 increases production 3.92%，Attend Sichuan province production in the same year to test, Average output 8.664t/hm2，Than for shine Shan You 63 increases production 9.31%。It is good that this combination has type，Divide into Nie Li and winner，Produce highyield steadily，Excellent quality is disease-resistant，Adaptability waits for characteristic well，Those that meet the south rice district of our country level dam and hills district and Shan the 63 kinds of good local plantation planted。