中国草地学报2025，Vol.47Issue(11)：61-71,11.DOI:10.16742/j.zgcdxb.20250179
品种与种植密度对榆阳区青贮玉米性状与产量的影响
Effects of Variety and Planting Density on Agronomic Traits and Yield of Silage Maize in Yuyang District
摘要
Abstract
This study investigated the effects of variety and planting density on the agronomic traits and yield of silage maize(Zea mays),and aimed to identify optimal variety-density combinations to alleviate the silage for-age supply-demand imbalance in Yuyang District,Shaanxi Province.Growth characteristics and yield perfor-mance of 10 varieties were evaluated under three planting densities(82 500,90 000,and 97 500 plants/hm2),and comprehensive evaluation was conducted using Grey Relational Analysis(GRA).Results showed that vari-ety had a significant effect on plant height(P<0.01),with the plant heights of both Xianda 6331 and Zhong-nongda 787 exceeding 320 cm.Both the leaf area index and light interception rate increased significantly with increasing planting density(P<0.01)and were positively correlated with each other(P<0.001).The fresh for-age yield was the highest under 90 000 plants/hm2.Comprehensive analysis with GRA identified varieties Zhongnon-gda 787,Lilong 915,and Jingke 627 as the top varieties.In conclusion,an optimal planting density of 90 000 plants/hm2 is recommended for Yuyang District,with Zhongnongda 787 and Lilong 915 as suitable varieties.This provides theoretical and technical support for efficient silage maize production in this region.关键词
青贮玉米/品种/种植密度/农艺性状/生物产量Key words
Silage maize/Variety/Planting density/Agronomic characteristics/Biological yield分类
农业科技引用本文复制引用
贾兆朴,范立钊,张利平,任波,杨霞,霍延卫,王显国,张运龙..品种与种植密度对榆阳区青贮玉米性状与产量的影响[J].中国草地学报,2025,47(11):61-71,11.基金项目
国家牧草产业技术体系项目(CARS-34) （CARS-34）
