【摘要】 应用灰色系统理论中的关联度分析方法,对山西大丰种业有限公司2003—2005年玉米鉴定试验产量居前10位高产组合的数量性状进行了综合分析。结果表明,山西稀植大穗玉米生态区,玉米各数量性状对产量的影响程度为:穗粒质量>穗粗>穗粒数>行粒数>穗长>穗行数>株高>穗位高;选育或引进高产((15 321.0±954.6)kg/hm2)玉米品种时,在选用抗病抗倒、抗旱优质、生育期适中的基础上,重点选择穗粒质量(302.1±24.9)g、穗粗(6.2±0.4)cm、穗粒数(808.5±70.6)粒、行粒数(43.8±4.2)粒、穗长(23.6±2.0)cm、穗行数(18.5±1.3)行、株高(286.9±26.0)cm和穗位高(122.5±19.3)cm的玉米新品种。更多还原

【Abstract】 Using method of grey correlation degree analysis,integreated analysis were conducted to quantitative traits for top 10 high-yielding combinations in 2003-2005 maize identifying test by Dafeng Seeds Company Ltd..The results showed that in all ecological areas,yield affecting degrees of all quantitative traits were in an order of cob grain mass>cob diameter>cob grain number>row grain number>cob length>cob row number>plant height>cob height.In high-yielding maize((15 321.0±954.6)kg/hm2)breeding or introduction,new species with cob grain mass(302.1±24.9)g,cob diameter(6.2±0.4)cm,cob grain number(808.5±70.6),row grain number(43.8±4.2),cob length(23.6±2.0)cm,cob row number(18.5±1.3),plant height(286.9±26.0) cm,cob height(122.5±19.3) cm would be standards for goal maize,on basis of disease resistance,lodging resistance,drought resistance,fine quality,and medium growth period.更多还原