杂交小麦产量构成因素分析  

Analysis of Yield Components of Hybrid Wheat

作　　者：齐志广[1] 

机构地区：[1]河北师范大学生命科学学院,河北石家庄050016

出　　处：《河北师范大学学报（自然科学版）》2005年第4期399-403,共5页Journal of Hebei Normal University：Natural Science

基　　金：河北省自然科学基金资助项目(301103);河北师范大学自然科学基金资助项目(L200205)

摘　　要：通过分析全国及河北省不同地区杂交小麦单位面积产量和产量构成因素的关系,表明在杂交小麦单位面积产量的构成因素中,千粒重对产量的贡献最大,贡献率为45.15%,单位面积穗数次之,穗粒数对单位面积产量的贡献最小.栽培管理中,在保证基本苗的基础上,适当促进冬前分蘖,合理促进拔节期生长,保证灌浆期的肥水供应,就能达到高产.The relationship of the yield components (such as grains per spike,1?000-kernel weight,spike per centiare) and the yield per centiare was analysed in Hebei province and other districts of China.The result illustrated that the most contribution to the yield (about 39.88%)came from the 1?000-kernal weight,the spike per centiare was the second,the least was grains per spike.So the improvement of the 1?000-kernal weight and spike numbers per centiare is the key way to promote the yield.

关 键 词：杂交小麦 产量因素 回归分析 千粒重 贡献率 

分 类 号：Q3[生物学—遗传学] S51[农业科学—作物学]