Abstract:

The aim was to screen out high-quality and high-yield oat varieties suitable for planting in high altitude and harsh environment (Maduo region) of Qinghai-Tibet Plateau, thereby enhancing local oat forage production standards and alleviating the shortage of forage in alpine areas. This study selected eight oat varieties with favorable traits for a comparative introduction trial conducted in Ayin Village, which is located in the Yellow River basin of Maduo County. The agronomic traits, yield characteristics, and quality attributes of different oat varieties were analyzed and evaluated. This research employed the TOPSIS multi-criteria decision-making model to conduct a comprehensive evaluation of multiple indicators across different oat varieties. The results indicated that the ‘Qinghai 444’ oat variety achieved the highest dry hay yield at 5514.67 kg/hm², with a plant height of 58.82 cm. The ‘Qingyin No.3’ and ‘Qinghai Sweet Oat’ varieties exhibited relatively high crude protein content, at 7.25% and 6.21%, respectively. Additionally, ‘Qingyin No.3’ showed lower acid detergent fiber and neutral detergent fiber contents, at 38.42% and 56.06%, respectively, while demonstrating a relatively high feed value of 83.76%. The TOPSIS multi-criteria decision-making model analysis revealed that both ‘Qinghai 444’ and ‘Qingyin No.1’ oat varieties exhibited superior production performance and nutritional quality, making them ideal choices for large-scale cultivation and promotion in the Maduo region.

Key words: oats, Maduo region, production performance, nutritional value, comprehensive evaluation, TOPSIS model, agronomic traits, introduction evaluation trial