【摘要】 为筛选适合于陇东旱塬区种植的一年生禾豆混播草地的混播组合及比例，以甘农2号小黑麦、加拿大饲用燕麦和西牧333箭筈豌豆为材料，研究9个禾豆混播比例（禾本科牧草:豆科牧草比例为100:0、80:20、70:30、60:40、50:50、40:60、30:70、20:80、0:100）的生产性能和营养品质。结果表明，箭筈豌豆提高了混播群体的营养价值，使粗蛋白含量显著提高；从草产量看，禾豆比例70:30处理的平均干草产量最高（8.07 t/hm~2），显著高于禾本科牧草单播（6.49 t/hm~2）和豆科牧草单播（2.54 t/hm~2）。TOPSIS综合评价分析表明，加拿大饲用燕麦与西牧333箭筈豌豆按70:30比例混播时干草产量最高（8.67 t/hm~2），粗蛋白含量为11.30%，综合评价理想贴合度Si最高（0.679），适宜在陇东旱塬区及其他气候相似区推广种植。更多还原

【Abstract】 To screen the mixed combination and proportion suitable for annual grass-legume mixture in the Longdong rainfed plateau area,the production performance and nutritive value of nine mixed cropping ratios of grass-legume (100∶0,80∶20,70∶30,60∶40,50∶50,40∶60,30∶70,20∶80,0∶100) were studied with Gan?nong No.2 triticale,Canadian oat,and Ximu 333 common vetch.The results showed that the common vetch improved the nutritive value of mixed cropping population and significantly increased the crude protein content.In terms of forage yield,the average hay yield of the grass-legume ratio 70∶30 was the highest (8.07 t/hm~2),significantly higher than that of single cropping of grass (6.49 t/hm~2) and legume (2.54 t/hm~2).TOPSIS comprehensive evaluation analysis showed that the hay yield of Canadian oats and Ximu 333 common vetch was the highest (8.67 t/hm~2) when the mixed cropping ratio was 70∶30,the crude protein content was11.30%,and the Si of comprehensive evaluation was highest (0.679),which was suitable for promotion and planting in Longdong rainfed plateau area and other similar climate areas.更多还原