| 摘要: |
| 【目的】筛选适宜内蒙古土默特地区种植的苜蓿品种资源，确定合理的管理模式，为当地建立苜蓿栽培草地提供优良种质。【方法】对国内外12个苜蓿品种进行区域试验，采用随机区组设计，于2012-2014年每年的初花期进行3次刈割，测定草产量及营养成分（干物质（DM）、粗蛋白质（CP）、酸性洗涤纤维(ADF)、中性洗涤纤维（NDF））含量，计算相对饲用价值（RFV），根据产量和RFV的耦合作用筛选出最优苜蓿品种。【结果】2012年中苜2号的草产量、CP及RFV值均为最高。2013年草产量最高的是惊喜，但与中苜2号、草原3号无显著差异（P>0.05）；中苜2号、草原3号和惊喜的CP含量均高于20%；RFV值最高的是中苜2号，显著高于其他品种（P<0.05）。2014年草产量最高的是惊喜，其次是中苜2号；CP含量最高的是中苜2号；RFV值最高的是中苜2号，其次为草原3号和惊喜。12个苜蓿品种的第1茬草产量对总产量的贡献率均最高。根据苜蓿产草量和RFV值的耦合结果，确定中苜2号、惊喜和草原3号属于较佳品种。【结论】中苜2号、草原3号和惊喜3个品种在年产量及营养品质方面表现较好，均更适合在土默特地区种植，且应在第1茬牧草收获期间做好田间管理。 |
| 关键词: 苜蓿 品种试验 牧草产量 营养价值 |
| DOI： |
| 分类号: |
| 基金项目:国家公益性行业（农业）科研专项“土默特平原苜蓿高效种植技术研究与示范”（201403048-05） |
|
| Comparison of production performance of different alfalfa varieties in Tumed region |
|
YU Jie,MENG Kai,et al
|
| Abstract: |
| 【Objective】The study selected proper varieties of alfalfa in Tumed region,Inner Mengolia to determine reasonable management mode for establishing good alfalfa grassland.【Method】A total of 12 alfalfa varieties at home and abroad were planted in regional test based on randomized block design and mowed three times in initial flowering stage in 2012,2013,and 2014.The yield and nutrient composition including dry matter (DM),crude protein (CP),acid detergent fiber (ADF) and neutral detergent fiber (NDF) were determined and relative feed value (RFV) was calculated to select optimal alfalfa varieties.【Result】The yield,CP,and RFV of Zhongmu No.2 (local variety) in 2012 were the highest.In 2013,Adrenalin had the highest yield,but not significantly different (P>0.05) from Zhongmu No.2 and Caoyuan No.3.The CP values of Zhongmu No.2,Caoyuan No.3 and Adrenalin were larger than 20%,and Zhongmu No.2 had significantly higher RFV than other varieties (P<0.05).Adrenalin had the highest yield in 2014,followed by Zhongmu No.2,while Zhongmu No.2 had the highest CP.Zhongmu No.2 had the highest RFV,followed by Caoyuan No.3 and Adrenalin.The yields of first cut of the 12 alfalfa varieties contributed the most to total production.All the varieties were divided into three types,and Zhongmu No.2,Caoyuan No.3 and Adrenalin were better than others.【Conclusion】Zhongmu No.2,Caoyuan No.3 and Adrenalin were more suitable for planting in Tumed region according to production and nutritional quality performance.It is suggested to do better field management during the first harvest period. |
| Key words: |
