中国农学通报2026，Vol.42Issue(13)：12-21,10.
河南省夏玉米高产稳产新品种评价及产量影响因素研究
Evaluation of New Summer Maize Varieties with High and Stable Yield in Henan Province and Research on Factors Affecting Yield
刘桂珍 1陈鹏 2张光秀 3张留声 1张香粉 1刘海静 1周宁1
作者信息
- 1. 河南省种业发展中心,郑州 450046
- 2. 南阳市种业发展中心,河南 南阳 473000
- 3. 周口市种业发展中心,河南 周口 466000
- 折叠
摘要
Abstract
This study aims to establish an evaluation method for identifying new maize varieties,selecting those with high and stable yields as well as wide adaptability,to accelerate the promotion and application of new varieties and support the sustainable and stable increase of maize production in Henan Province.57 summer maize varieties were used as experimental materials.A comprehensive evaluation of varietal performance was conducted by analyzing the growth period,lodging resistance,yield,and related agronomic traits,integrating the high stability coefficient method,the Eberhart-Russell model,and the random forest algorithm.The average growth period of the tested varieties was 107.0 days,the plant height ranged from 225.5 to 280.8 cm,and the sum of lodging and lodging-breaking rates varied from 0.1%to 14.4%.The yield range was 9202.81 to 11093.58 kg/hm2.Among them,'Chengyu 668'had the highest yield,reaching 11093.58 kg/hm2;while'Dingyou 221'had the highest high stability coefficient of 88.65%.Correlation and random forest model analysis showed that yield was significantly positively correlated with traits such as 100-grain weight and ear diameter.Seed yield had the greatest contribution to yield prediction in the random forest model,and the path coefficient of seed rate to yield was also the highest.Through cross-validation of the high stability coefficient method,four-quadrant analysis and Eberhart-Russell model,two varieties,'Keteng 918'and'Xianyu 534',with both high yield and stable yield were screened out,providing a scientific basis for optimizing the maize variety structure in Henan Province.关键词
夏玉米/新品种评价/高产稳产/高稳系数/Eberhart-Russell模型/随机森林/通径分析/河南省Key words
summer maize/new variety evaluation/high and stable yield/high stability coefficient/Eberhart-Russell model/random forest/path analysis/Henan Province分类
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刘桂珍,陈鹏,张光秀,张留声,张香粉,刘海静,周宁..河南省夏玉米高产稳产新品种评价及产量影响因素研究[J].中国农学通报,2026,42(13):12-21,10.
