摘要
为充分挖掘超级杂交稻金优785的产量潜力,在2008—2013年试验示范的基础上,对金优785在区域试验和超高产示范中的产量及其产量构成因子进行分析。结果表明:金优785产量构成因素中单位面积穗数的对产量贡献最大(PC=0.665 1),其次是穗粒数(PC=0.505 8),千粒重对产量贡献最小(PC=0.027 1);超高产示范的单位面积穗数和结实率极显著高于区域试验。金优785产量潜力大,具有超高产能力,实现超高产的主要途径为提高穗数,在足够穗数前提下,主攻大穗,在此基础上提高结实率。
To fully exploit the yield potential of super hybrid rice Jinyou 785,on the basis of test demonstration during 2008-2013,yield and yield components of Jinyou 785 were analyzed in regional test and super-high yield demonstration.Results：Per unit ear number contributed the most to yield（PC=0.665 1）,followed by kernels per spike（PC=0.505 8）,thousand kernel weight contributed the least to yield（PC=0.027 1）;The per unit ear number and seed setting rate in super-high yield demonstration were extremely significantly higher than that in regional test.Jinyou 785 is of great yield potential and super-high yield ability,the main way to achieve super-high yield is enhancing the ear number,under the premise of this,increasing the number of large ears,and improving the seed setting rate.
出处
《贵州农业科学》
CAS
2017年第5期41-43,共3页
Guizhou Agricultural Sciences
基金
贵州省农业攻关项目"水稻超高产群体特征研究及其调控"[黔科合NY字(2014)3018]
贵州省农业科学院专项资金项目"水稻旱育丢秧高产栽培生理特性研究与应用"[黔农科院专项(2014)013]
贵州省农业科学院自主创新项目"水稻种质创新及高效育种与栽培技术体系研究"[黔农科院自主创新科研专项字(2014)019]
关键词
超级稻
金优785
超高产
产量潜力
途径
super hybrid rice
Jinyou 785
Super-high yield
yield potential
way
