超级稻桂两优2号在广西多个生态点作早晚稻种植的产量差异分析  

Analysis on Yield Difference of Super Hybrid Rice Guiliangyou 2 for Early Rice and Late Rice Planting in Guangxi Province

作　　者：王强[1] 梁天锋[1] 唐茂艳[1] 陈雷[1] 张晓丽[1] 陈仁天[1] 陈彩虹[1] 李炜 吕荣华[1] 张宗琼[1] 

机构地区：[1]广西农业科学院水稻研究所,南宁530007 [2]广西粮油科学研究所,南宁530001

出　　处：《中国稻米》2014年第2期66-68,共3页China Rice

基　　金：国家现代农业产业技术体系广西创新团队(水稻)专项;广西农业科学院博士科研启动费;农业行业科研专项"主要粮食作物高温热害及干热风预警及缓解技术研究示范"(201203029);广西主要粮经作物抗旱关键技术集成与示范(2012BAD40B04)

摘　　要：两系籼型杂交水稻桂两优2号是广西首个超级稻品种,由广西农业科学院水稻研究所育成,具有高产、稳产、抗倒伏、适应性广等特点。桂两优2号可作早、晚稻两用,并且早稻产量高于晚稻。试验结果表明,结实率高和单位面积颖花量大是桂两优2号作早稻比作晚稻产量高的主要原因,并提出了缩小晚稻与早稻产量差距的栽培管理技术。Guiliangyou 2 is the first super rice variety of Guangxi Province, bred by rice research institute of Guangxi academy of agricultural sciences, with the characters of high and stable yield potential, wide adaptability and high lodging resistance. Guiliangyou 2 can be grown as both early rice and late rice, the yield of early season rice was higher than that of late season rice. The results indicated that higher grain yield of early season rice was partly rely on greater spikelets per m2 and higher seed setting rate. Some cultivation techniques were suggested to reduce the yield difference.

关 键 词：超级稻 桂两优2号 早稻 晚稻 产量 产量构成 

分 类 号：S511.21[农业科学—作物学]