摘要
为寻找毛乌素沙地特殊环境中玉米种植密度和品种最佳耦合度,以5个不同玉米品种为材料,设置5个不同种植密度水平,进行农艺性状及产量的相关性和通径分析,为玉米高产和高效优质生产提供科学依据。结果表明:(1) JY308、DH182和DY606适宜种植密度为8.25万株·hm^(-2);(2)相关性分析表明,不同种植密度处理下,产量分别与行粒数、倒折率、穗位高呈极显著相关(P<0.01);(3)通径分析表明,穗位高对产量的直接负向效应最大,倒折率和倒伏率对产量的直接负向效应较大。毛乌素沙地玉米种植在低密度时应注重增加玉米的行粒数,中高密度要减小倒伏率,注重合理的穗位,同时要兼顾各农艺性状的相互影响。
In order to find the optimal maize planting density and coupling degree of the variety in the special environment of Mu Us Sandy Land,5 different maize varieties were taken as materials,and 5 different planting densities were set to conduct correlation and path analysis of agronomic traits and yield,so as to provide scientific basis for high yield and efficient high-quality production of maize.The results showed that:(1)the appropriate planting density of JY308,DH182 and DY606 was 8.25×10^(4) plants⋅hm^(-2);(2)correlation analysis showed that under different planting density treatments,yield was extremely and significantly correlated with grain number per row,broken ear rate,and ear height(P<0.01);(3)path analysis showed that ear height had the greatest direct negative effect on yield,while broken ear rate and lodging rate had a greater direct negative effect on yield.When planting maize in the Mu Us Sandy Land,the number of maize grains per row under low density should be increased,lodging rate under medium to high density should be reduced,reasonable ear position should be maintained and the mutual influence of various agronomic traits should be considered.
作者
郭海红
屈高峰
赵帆
封琳
白成波
许晓瑞
卜凯
GUO Haihong;QU Gaofeng;ZHAO Fan;FENG Lin;BAI Chengbo;XU Xiaorui;BU Kai(Agricultural Technology Promotion Station in Baijie District,Hengshan District,Yulin,Shaanxi 719100,China;Agricultural Technology Promotion Center in Hengshan District,Yulin,Shaanxi 719100,China;Agricultural Tech‐nology Promotion Station in Zhaoshipan District,Hengshan District,Yulin,Shaanxi 719100,China;Agricultural Technology Promotion Station in Shiwan District,Hengshan District,Yulin,Shaanxi 719100,China)
出处
《农业研究与应用》
2023年第6期33-40,共8页
Agricultural Research and Application
关键词
玉米
种植密度
农艺性状
产量
相关性分析
通径分析
Maize
planting density
agronomic traits
yield
correlation analysis
path analysis
