播期对扬两优6号产量形成的影响  

Effect of Sowing Dates on Grain Yield Components in Yangliangyou 6

作　　者：张洪熙[1] 戴正元[1] 王宝和[1] 肖宁[1] 周长海[1] 李爱宏[1] 刘广青[1] 赵步洪[1] 

机构地区：[1]江苏里下河地区农科所国家水稻产业技术体系扬州综合试验站,扬州225007

出　　处：《上海交通大学学报（农业科学版）》2009年第4期384-388,398,共6页Journal of Shanghai Jiaotong University(Agricultural Science)

基　　金：江苏省自然科学基金(BK2007071);国家自然科学基金(30871480)

摘　　要：以扬两优6号和汕优63为材料,研究了不同播期对产量形成的影响。结果表明:扬两优6号在不同播期条件下,平均产量比汕优63增产19.5%;其齐穗期干重、成熟期干重和籽粒干重高20.2%、29.0%和17.5%;扬两优6号具有高的物质生产能力和适宜的物质运转率,同时在适当推迟播期条件下,能安全抽穗,这是其高产稳产的基础。并讨论了扬两优6号高产稳产的适宜播期。With yangliangyou 6 and shanyou 63 as materials, the effect of sowing dates on grain yield components was researched. The results showed that： compared with shanyou 63, the average yield in different sowing dates was 19.5 percent higher; the dry weight accumulation in heading stage, maturity stage and the dry matter weight of grain were 20.2, 29.0, 17.5 percent higher; the dry matter weight productive capacity of yangliangyou 6 were higher, and the dry matter weight operation factor was more appropriated, and moreover, yangliangyou 6 could ripe in time with sowing date postponed, these were the base of high and stable yield. The appropilate sowing date of yangliangyou 6 was discussed.

关 键 词：播期 两系杂交水稻 产量 生育期 积温 

分 类 号：S511.038[农业科学—作物学]