杂交稻新组合Ⅱ优673特征特性与高产栽培技术研究  

Characteristics of New Hybrid Rice Combination ⅡYou 673 and Its High-yielding Cultivated Techniques

作　　者：黄达彪 

机构地区：[1]中国种子集团福建农嘉种业股份有限公司,福建福州350011

出　　处：《江西农业学报》2009年第9期31-32,35,共3页Acta Agriculturae Jiangxi

基　　金：福建省科技重大专项"粮食作物种质创新及关键配套技术研究与示范"(2005NZ1009)

摘　　要：Ⅱ优673是福建省农科院水稻研究所超级稻育种研究室用育成的强恢复系"福恢673"与三系不育系"Ⅱ-32A"配组育成的中籼型三系杂交水稻新组合,具有株型好、分蘖力强、稳产丰产、优质抗病、适应性好等特点。介绍了该组合的特征特性,研究了不同氮肥施用比例对Ⅱ优673分蘖动态、分蘖成穗率、产量及其构成因素的影响,结果表明,减少促蘖肥,提高了水稻分蘖成穗率,增加了水稻产量,并提出了高产栽培技术要点。The new medium -indiea hybrid rice combination ⅡYou 673 was bred by hybridization between strong restoring line Fuhui 673 and three - line sterile line Ⅱ- 32A in 2008. This hybrid rice combination has the characteristics of good shape, steady yield, disease - resistance and strong adaptability. The experiment was conducted to study the influence of different nitrogen fertilizer applica- tion modes on tillering dynamics, ear - bearing tiller rate, grain yield and yield components ofⅡYou 673. The results showed that properly decreasing the proportion of nitrogen application at tillering stage could increase ear - bearing tiller rate and significantly enhance the rice yield. Moreover, the main points of high - yielding cultivated techniques of ⅡYou 673 had also been proposed.

关 键 词：杂交水稻 Ⅱ优673 特征特性 栽培技术 

分 类 号：S511.32[农业科学—作物学]