土默特地区不同苜蓿品种生产性能的比较  

Comparison of production performance of different alfalfa varieties in Tumed region

作　　者：肖燕子[1] 于洁[1] 孟凯[1] 李星月[1] 米福贵[1] 

机构地区：[1]内蒙古农业大学草原与资源环境学院,内蒙古呼和浩特010019

出　　处：《西北农林科技大学学报（自然科学版）》2017年第4期65-70,78,共7页Journal of Northwest A&F University(Natural Science Edition)

基　　金：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)

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。[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 al-falfa varieties at home and abroad were planted in regional test based on randomized block design and mow-ed three times in initial flowering stage in 2012,2013,and 2014. The yield and nutrient composition inclu- ding 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, fol-lowed 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.

关 键 词：苜蓿 品种试验 牧草产量 营养价值 

分 类 号：S540.29[农业科学—作物学]