高寒山区中稻超级杂交稻品种（组合）比较试验

为筛选出适合高寒山区中稻种植的丰产性好、抗逆性强、米质优、熟期适宜的超级杂交稻新组合,2007～2008年在广西三江县对7个超级稻品种（组合）进行了比较试验。结果表明：7个超级杂交稻品种（组合）的产量较高,均达到7662.0kg/ha以上,其中以Ⅱ优航1号的产量最高,达8743.5kg/ha,其余依次为Y两优1号、中浙优1号、中浙优8号、扬两优6号、新两优6号、Q优6号。从产量构成看,7个超级稻品种（组合）均可在高寒山区作中稻种植,但综合参试超级稻品种（组合）的产量结果、田间表现、抗病性、稻米品质、生长势等因素分析,以中浙优1号、中浙优8号、Y两优1号、Ⅱ优航1号4个品种（组合）最为理想,可作为高寒山区中稻主推品种（组合）。

Comparative experiment on super hybrid rice varieties (combinations) planted in mid-season in cold mountain area

The present study was conducted to select new super hybrid rice combinations with good fertility,strong resistance to stress,good grain quality and suitable maturity.The experiment was carried out during the mid season in cold mountain area of Guangxi.Seven super hybrid rice varieties（combinations） were planted and compared in Sanjiang County,Guangxi,during 2007 to 2008.The results showed that all of super hybrid varieties（combinations） had higher yield which was over 7662.0kg/ha.Out of all the varieties,II Youhang 1 recorded the highest（8743.5kg/ha） yield followed by Y Liangyou 1,Zhongzheyou 1,Zhongzheyou 8,Yangliangyou 6,Xinliangyou 6 and Q You 6.All of the seven super hybrid rice varieties（combinations） can be planted as mid season rice in cold mountain area based on yield components,while four varieties（combinations）,viz.,Zhongzheyou 1,Zhongzheyou 8,Yangliangyou 6 and ⅡYouhang 1 were the best and could be extended for large scale production based on yield,field performance,disease resistance,grain quality and growth vigor,etc.