14个粮饲兼用玉米品种农艺性状与产量的通径分析  

Path Analysis on Agronomic Characters and Yield of 14 Silage Maize Varieties

作　　者：李莉[1] 梁维维[1] 张荟荟[1] 兰吉勇[1] 李学森[1] 柯梅[1] 张学洲[1] LI Li;LIANG Wei-wei;ZHANG Hui-hui;LAN Ji-yong;LI Xue-sen;KE Mei;ZHANG Xue-zhou(Grassland Institute,Xinjiang Academy of Animal Sciences,Urumqi 830000,China)

机构地区：[1]新疆畜牧科学院草业研究所,乌鲁木齐830000

出　　处：《草食家畜》2020年第5期34-40,共7页Grass-Feeding Livestock

基　　金：国家牧草产业技术体系(CARS-34);国家农业环境数据中心项目(ZX03S3202)。

摘　　要：【目的】为明确新疆区粮饲兼用玉米各农艺性状与生物产量及籽实产量构成因素的相关性,客观评价各农艺性状对生物产量和籽实产量的实际贡献作用。【方法】本研究选用14个粮饲兼用玉米品种,对农艺性状与生物产量和籽实产量进行相关性和通径分析。【结果】结果表明,粮饲兼用型玉米的生物产量与叶片(0.766**)呈极显著正相关,与株高(0.661*)、绿叶(0.636*)和穗长(0.658*)呈显著正相关。籽粒产量与茎粗(0.834**)、叶片(0.695**)呈极显著正相关。叶片数(1.5034)对生物产量的贡献最大,茎粗(0.4008)对籽粒产量的贡献最大。【结论】在新疆粮饲兼用型玉米如果要以生物产量利用为前提应选择叶片数较多,株高较高的品种,如果要以收获籽粒为前提应选择茎粗较粗,穗部综合性状较好的品种。【Objective】In order to clarify the correlation between the agronomic characters and the components of the biological yield and the seed yield of silage maize in Xinjiang,objectively evaluate the actual contribution of the agronomic characters to the biological yield and the seed yield.【Method】In this study,14 silage maize varieties were selected for correlation and path analysis of agronomic traits with biological yield and seed yield.【Result】The results showed that the biological yield of silage maize had a extremely significant positive correlation with leaves(0.766**),was significantly positive correlated with plant height(0.661*),green leaf(0.636*)and ear length(0.658*).Seed yield was extremely significantly positive correlated with stem diameter(0.834**)and leaf(0.695**).The number of leaves(1.5034)contributed the most to the biological yield,and the stem thickness(0.4008)contributed the most to the seed yield.【Conclusion】When planting silage maize in Xinjiang,if you want to use biological yield,you should choose varieties with more leaves and higher plant heights.If you want to harvest seed,you should choose thicker stems and better ear characteristics.

关 键 词：粮饲兼用玉米 农艺性状 产量 通径分析 

分 类 号：S513[农业科学—作物学]