黑龙江省西部干旱区玉米产量与产量构成因素的相关性分析  

Correlation Analysis of Maize Yield and Yield Components in Arid Area of Western Heilongjiang Province

作　　者：徐磊[1] 谭福忠[1] 师臣[1] 周长军[1] 郑巍[1] 齐国超[1] 陈刚 于海峰 XU Lei;TAN Fu-zhong;SHI Chen;ZHOU Chang-jun;ZHENG Wei;QI Guo-chao;CHEN Gang;YU Hai-feng(Daqing Branch of Heilongjiang Academy of Agricultural Sciences,Daqing 163316,China;Agricultural and Rural Social Service Center of Daqing Agricultural and Rural Bureau,Daqing 163000,China)

机构地区：[1]黑龙江省农业科学院大庆分院,黑龙江大庆163316 [2]大庆市农业农村局农业农村社会事业服务中心,黑龙江大庆163000

出　　处：《黑龙江农业科学》2020年第7期1-6,共6页Heilongjiang Agricultural Sciences

基　　金：黑龙江省现代农业产业技术协同创新推广体系项目。

摘　　要：为探究黑龙江省西部干旱区玉米杂交种主要农艺性状对产量的影响,本试验采用随机区组设计,对12个玉米材料主要农艺性状与产量进行多元统计分析。结果表明:通过相关性分析,产量与单穗粒重呈极显著正相关,与出籽率和穗粗均呈显著正相关;通过偏相关分析,产量与出籽率呈极显著正偏相关,与单穗粒重呈显著正偏相关。在多元线性回归分析中单穗粒重、出籽率、穗行数与产量的复相关系数R=0.965,决定系数R2=0.932,说明此3个性状可以主导93.2%玉米产量的变异,因此建立最优回归方程为Y=-28.344+0.349X4+0.290X7+63.064X8;在通径分析中单穗粒重对产量的直接影响最大,其次是出籽率,说明单穗粒重、出籽率是直接影响玉米产量的重要性状。综上,在该区域选择高产玉米品种时,应注重选择出籽率高和单穗粒重较大的杂交玉米品种。In order to explore the effect of main agronomic traits on yield of maize hybrids in the arid area of western Heilongjiang Province,the main agronomic characters and yield of 12 maize materials were analyzed by random block design.The results showed that the yield was very significant positively correlated with the grain weight per ear and significant positively correlated with seed yield and ear diameter through correlation analysis.The yield was very significant positively correlated with seed yield,and significant positively partial correlated with grain weight per ear through partial correlation analysis.The multiple linear regression analysised that the complex correlation coefficient between grain weight per ear,seed yield,row number per ear and yield was R=0.965,and the determination coefficient R2=0.932,indicated that these three traits could dominate the variation of 93.2%maize yield.Therefore,the optimal regression equation was established as Y=-28.344+0.349X4+0.290X7+63.064X8.In the path analysis,grain weight per ear had the greatest direct effect on yield,followed by seed yield,indicated that grain weight per ear and seed yield were important traits that directly affected maize yield.To sum up,when selecting high-yield maize varieties in this region,attention should be paid to the selection of hybrid maize varieties with high seed rate and larger grain weight per ear.

关 键 词：农艺性状 相关分析 通径分析 回归分析 

分 类 号：S51[农业科学—作物学]