草业学报2025，Vol.34Issue(1)：191-202,12.DOI:10.11686/cyxb2024084
陇东南部林缘山区青贮玉米品种筛选及其高效栽培研究
Selection of optimal varieties of silage maize and methods for cultivation in mountainous forest-margin areas of southeast Gansu Province
摘要
Abstract
The aims of this study were to screen cultivars of silage maize(Zea mays)to identify those suitable for cultivation in forest-margin mountainous areas of southeast Gansu,and to determine the most appropriate cultivation methods.A field experiment was conducted with five varieties of silage maize,and their yields and nutrient contents were determined.A grey correlation analysis was conducted to rank the five varieties from most to least suitable on the basis of their attributes.Overall,the variety Tie Yan 53 performed the best,and could serve as the main variety for cultivation in southeast Gansu.The impact of different nitrogen application rates(0,70,140,210,and 280 kg N·ha-1)and different planting densities(60000,67500,75000,82500 and 90000 plants·ha-1)on the yields and quality of Tie Yan 53 was determined.The results showed that the maximum yield of Tie Yan 53(38.80 t·ha-1)was obtained with 210 kg N·ha-1.Increasing the N application rate to 280 kg N·ha-1 did not increase the yield,but resulted in the best nutrient status.The yield of Tie Yan 53 increased with increasing planting density,with the maximum yield achieved at 90000 plants·ha-1.The crude protein content was highest at a planting density of 75000 plants·ha-1,and the crude protein yield was highest at a planting density of 90000 plants·ha-1.Considering the balance between N application,yield,and economic benefits,280.74 kg N·ha-1 is recommended as the appropriate N application rate for Tie Yan 53 in this area.To achieve the best yield and quality,the recommended planting density is 90000 plants·ha-1.关键词
青贮玉米/产量/品质/灰色关联度分析法/种植密度/施氮量Key words
silage maize/yield/quality/grey correlation analysis/planting density/nitrogen application rate引用本文复制引用
王新友,刘永福,王永宏,刘珊,白美婷,王小兰,张万昌,李颖,马永玲,王晓寅,王建刚,王海青,岳贝凡..陇东南部林缘山区青贮玉米品种筛选及其高效栽培研究[J].草业学报,2025,34(1):191-202,12.基金项目
2022年度陇原青年创新创业人才(团队)项目"生态草牧业助推林缘山区高质量发展技术研究团队(2022LQTD21)",2022年度甘肃省高等学校创新基金项目"适宜天水林缘山区的青贮玉米品种筛选试验研究(2022A-299)"和"不同施肥处理对陇东南部林缘区青贮玉米产量和品质的影响研究(2022B-390)"资助. （团队）
