两系杂交水稻两优681高产栽培模式研究  

Study on Cultivation Pattern of Combination of Two-line Hybrid Rice-Liangyou 681

作　　者：李天[1] 傅淡如[1] 王西瑶[1] 胡小红[1] 李崇云 

机构地区：[1]四川农业大学农学院,四川雅安625014 [2]四川雅安市农业局,四川雅安625000

出　　处：《四川农业大学学报》2005年第3期274-279,共6页Journal of Sichuan Agricultural University

基　　金：四川省科技厅应用基础研究项目;雅安市与四川农业大学地校合作项目。

摘　　要：采用二次回归正交旋转组合设计,考察施N量、追N时期、施K量、密度和播期5个因素,对两系杂交水稻两优681进行了高产栽培模式的研究,建立了该类型品种的农艺措施数学模型.对回归方程进行了统计选优,降维分析,边际效应分析.结果表明,各因素的重要性依次为:播期＞施K量＞密度＞追N时期＞施N量.高产栽培模式要点为:施N量(纯N)9.3～10.0 kg/667 m2,追N时期为7月9～11日(雌雄蕊分化至减数分裂期),施K量(K2O)15.7～16.8 kg/667 m2,栽插密度为1.72～1.80万窝/667 m2,播种期为3月26～28日.For Liangyou 681 which is a combination of Two-line hybrid rice, the cultivation pattern of high yield are analyzed with the device of secondary regression orthogonal rotary combination. In this study, there are five factors investigated. They are amount of N nutrition, period of dressing N, amount of K nutrition, Planting density and sowing date. For the regression equation, statistical optimum choosing, and the analysis of dimension reduced and margin effect have been analyzed. The resuits reveal that five factors are in this following order of importance： sowing date, amount of K nutrition, planting density, period of dressing N, amount of N nutrition, and that the main points for the pattern of cultivation are： application dose of pure nitrogen is 9.3-10.0 kg/667 m^2, period of dressing N is 9-11th, July, application dose of potassium is 15.7-16.8 kg/667 m^2, planting density is 17200-18000 hills/667 m^2 and sowing date is 26-28th, March.

关 键 词：两系杂交水稻 栽培模式 高产 统计分析 

分 类 号：S511.01[农业科学—作物学]