山西农业科学2025，Vol.53Issue(3)：50-57,8.DOI:10.3969/j.issn.1002-2481.2025.03.06
不同种植密度对夏玉米产量及农艺性状的影响
Effects of Different Planting Densities on Yield and Agronomic Traits of Summer Maize
摘要
Abstract
In order to explore the suitable planting densities of different varieties of summer maize under the high yield condition in the Western Henan region and further improve the yield level of summer maize,in this study,six varieties with excellent comprehensive traits and large planting areas,Zhengdan 958,Yudan 888,Luodan 30,Luoyu 16,Denghai 605,and Denghai 187,were used as experimental materials.Three planting densities were set:60 000 plants/ha(CK),75 000 plants/ha,and 90 000 plants/ha,the difference of the traits such as yield,yield component factor,leaf area,and dry matter per plant was analyzed.The results showed that the yield increased from 0.2%to 12.0%as the planting density increased from 60000 plants/ha to 75 000 plants/ha,and it increased from-2.74 to 9.80%as the planting density increased from 75 000 plants/ha to 90 000 plants/ha.As the planting density increased,the ear length decreased,the bald tip increased,the grains per ear decreased,the 100-grain weight decreased,the dry matter weight per plant decreased,and the leaf area index(LAI)increased.Correlation analysis showed that there was an extremely significantly positive correlation between yield and the grains per ear,100-grain weight,LAI,and dry matter weight per plant during the silking stage,and an extremely significantly negative correlation with bald tip.In conclusion,under the experiment conditions,the suitable planting density for Zhengdan 958 and Luoyu 16 was 75 000 plants/ha,while the suitable planting density for Luodan 30,Yudan 888,Denghai 605,and Denghai 187 was 90 000 plants/ha.关键词
夏玉米/种植密度/农艺性状/产量Key words
summer maize/planting density/agronomic traits/yield分类
农业科技引用本文复制引用
孟战赢,王育红,郭党,吴丽娜,田文仲,李俊红,李芳,吕军杰..不同种植密度对夏玉米产量及农艺性状的影响[J].山西农业科学,2025,53(3):50-57,8.基金项目
国家玉米产业技术体系(CARS-02-69) （CARS-02-69）
