30个燕麦品种(品系)在甘肃天祝地区的适应性评价

为了客观评价30份燕麦（Avena sative）品种（系）在甘肃天祝地区的适应性，本试验测定并分析了燕麦物候期、干草产量以及10个主要农艺性状。结果表明：30个燕麦品种只有7个可以在天祝完成整个生育期，大多数品种只能达到乳熟；干草产量最高的是燕王（192.87 kg·100m^-2）；10个主要农艺性状和干草产量的通径分析结果说明天祝地区轮层数、叶宽、株高性状是影响干草产量的最大因素；对10个农艺性状进行主成分分析，得到累计贡献率81.33%的4个主成分因子；在主成分析的基础上进行综合评价，定燕2号综合得分最高，是供试品种（系）中最适宜在天祝地区种植的品种。

Adaptability Evaluation of 30 Oat Germplasm in Tianzhu

In this study,agronomic characters related to the adaptability of 30 different oat varieties in Tianzhu,Gansu Province including phenological phases,hay yield and ten major characters were investigated. The results showed that only 7 varieties completed the growth period in Tianzhu. Most of the varieties only reached milking stage. the highest hay yield was Yan wang(192.87 kg·100m^-2),The results of path analysis showed that the panicle number,leaf width and plant height area are the biggest factors affecting hay yield in Tianzhu;Principal component analysis of nine characters related to adaptability indicated that the contribution rate of four principal component factors reached 81.33%. Accession Dinyan No.2 was the most suitable variety in the region of Tianzhu,Gansu Province with the highest integrated score compared to other tested varieties.