不同燕麦品种的干草产量和种子产量相关特性及影响因素研究

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关键词：环青海湖；燕麦品种；干草产量；种子产量中图分类号：S548 文献标识码：A 文章编号：1007-0435（2026）02-0531-12

Abstract：To select suitable high-quality oatvarieties forcultivation in the Qinghai Lakearea，ten introduced oat （Auena satiua L.）varieties were evaluated for yield and related traits，and the structural equation modeling was employed to analyze the key factors that affecting yield.The results showed that‘Model’ and‘Esker’had relatively short growth periods（132 and l25 days，respectively）.‘Monida’exhibited superior plant height （61. 93cm ）andhayyield （12 672.60kg⋅hm-2） .‘Baler 2∙ and‘Haymaker’performed better in leaf area and leaf perimeter.‘Everleaf'had the highest leaf area index（5.29）and，together with‘Forage’，produced more spikelet whorls （6.22）.‘Model’ had the highest thousand-grain weight （42.68g） . And‘Haymaker' achieved the highest seed yield （9963.06kg⋅hm-2） .Random forestanalysis indicated that the leafareaand grain weight per spike had significant effects on seed yield，while structural equation modeling revealed that yield was jointly regulated by both the direct efects of varietyand the indirect efects mediated through theleaf area index. Overallevaluation suggested that‘Haymaker’had remarkable advantages and could be recommended as the dominant oat variety for the Qinghai Lake area.

Keywords：QinghaiLake area;Oat varieties;Hay yield;Seed yield

燕麦（Avenasatiua）是一种粮饲兼用的禾本科一年生作物，在全球范围内广泛种植，主要分布于欧洲、北美洲和亚洲等地区1，其具有较强的抗逆性，适应性广，能够在土壤肥力较低、降水较少的地区稳定生长，因此在我国北方农牧交错区、高寒地区及半干旱地区种植广泛[2-3]。（剩余21208字）