19个紫花苜蓿品种在宁夏引黄灌区的营养价值评价

Comparison of the nutritional quality of 19 alfalfa varieties in the Yellow Irrigation Area of Ningxia

摘要:

【目的】 宁夏引黄灌区是紫花苜蓿（Medicago sativa）生产的重要基地，探究区域适应性强优质高产紫花苜蓿品种。【方法】 测定国内外19个紫花苜蓿品种不同茬次的营养品质指标，并运用隶属函数法进行综合分析，以筛选适合当地种植的高品质紫花苜蓿品种。【结果】 不同紫花苜蓿品种的营养指标在同一茬次内存在不同程度的差异，粗灰分、粗蛋白、粗脂肪含量的均值差异显著（P＜0.05），干物质、酸性洗涤纤维、中性洗涤纤维含量的均值和相对饲喂价值差异不显著。粗蛋白含量在18.21%~ 19. 91%，相对饲喂价值在116.03~132.42。【结论】 在宁夏引黄灌区，秋眠级在4.0~6.0的4746、 MF4020、阿迪娜、巨能601和瑞得具有较高的营养价值。

Abstract:

【Objective】 The Ningxia Yellow River Diversion irrigation area is an important base for the production of Medicago sativa. However，the lack of high-quality，high-yield alfalfa varieties with regional suitability is a major bottleneck limiting the development of the local forage industry.【Method】 The nutritional quality indexes of 19 domestic and foreign alfalfa varieties from different crops were measured. The affiliation function method was used for comprehensive analysis to identify high-quality alfalfa varieties suitable for local cultivation.【Result】 The results revealed that the nutritional indicators of different alfalfa varieties varied to different degrees，within the same crop. The mean values of crude ash，crude protein and ether extract were significantly different （P＜0. 05），while the mean values for dry matter，acidic detergent fiber，neutral detergent fiber，and relative feeding price were not significantly different. The mean crude protein （CP） ranged from 18. 21% to 19. 91%，and the mean RFV ranged from 116. 03 to 132. 42.【Conclusion】 In the Ningxia Yellow River Diversion irrigation area，the alfalfa vairieties 4 746，MF4020， Adrenalin，Giant energy 601，and Ryder（with fall dormancy of 4. 0~6. 0）demonstrated higher nutritional value and are suitable for local cultivation.