不同刈割高度对“川草2号”老芒麦牧草产量与品质的影响  

Effects of Different Mowing Height on the Yield and Quality of Elymus sibiricus cv. Chuancao NO.2

作　　者：雷雄[1,2] 游明鸿[2] 闫利军[2] 白史且[2] 季晓菲[2] 

机构地区：[1]西南民族大学青藏高原研究院,四川成都610041 [2]四川省草原科学研究院,四川成都611731

出　　处：《草业与畜牧》2016年第1期14-18,共5页Pruataculture & Animal Husbandry

基　　金：现代农业产业技术体系(CARS35-35);公益性行业(农业)科研项目(201003023)资助

摘　　要：本试验以老芒麦为研究对象,采用随机区组试验设计,研究了不同刈割高度对"川草2号"老芒麦牧草产量与品质的影响。试验结果表明:在盛花期不同刈割高度对"川草2号"老芒麦牧草产量与品质具有一定的影响。其中,以4cm刈割高度时的鲜草产量和干草产量最高,分别为22 029.95kg/hm2和5 755.94kg/hm2,但牧草品质较差,其CP为11%;6cm刈割高度时鲜草产量和干草产量相对较高,分别为20 207.32kg/hm2和4 781.259kg/hm2,但牧草品质最好,其CP达到15.73%。综合各项指标,"川草2号"老芒麦在盛花期,以刈割高度为6cm时,能使牧草产量与品质达到最佳。In order to investigate the influence of different cutting height on the forage yield and quality of Elymus sibiricus cv. Chuancao NO.2, a field experiment was carried out with a randomized complete block design during 2010-2011. The result shows that different mowing height can affect the forage yield and quality of E.sibiricus cv. Chuancao NO.2 at flowering stage. For 4 cm mowing height, the yield of fresh grass and dry grass were, 22 029.95kg/hm^2 and 5 755.94kg/hm^2, respectively, but forage quality was poor, with the value of crude protein 11%. For 6 cm mowing height, it gained relatively high herbage yield, with the value of 20 207.32kg/hm^2 fresh grass and 4 781.259kg/hm^2 dry grass, and forage quality got maximum, with the value of 15.73%. Comprehensively, when the mowing height is 6cm, the forage yield and quality of E.sibiricus cv. chuaneao NO.2 can achieve the best.

关 键 词：“川草2号”老芒麦 刈割高度 牧草产量 牧草品质 

分 类 号：S543.037[农业科学—作物学]