播量与刈割次数对老芒麦产量及品质的影响  

Effect of seeding rate and mowing frequency on the yield and quality of Elymus sibiricus

作　　者：王生文[1] 史静[1] 宫旭胤[2] 汪茜[1] 武慧娟[1] 张丽珍[1] 陈本建[1] 

机构地区：[1]甘肃农业大学草业学院/草业生态系统教育部重点实验室/甘肃省草业工程实验室/中-美草地畜牧业可持续发展研究中心,甘肃兰州730070 [2]甘肃省农业科学院,甘肃兰州730070

出　　处：《草原与草坪》2014年第6期62-67,共6页Grassland and Turf

基　　金：农业部公益性行业(农业)科研专项"牧区生态高效草原牧养技术模式研究与示范"(201003061);绒毛用羊产业技术体系放牧生态岗位科学家(CARS-40-09B);ACIAR项目(AS2/2001/094)资助

摘　　要：研究了不同播量(31.5,45.0和58.5kg/hm2)和不同刈割次数(每年1次,每年2次,每年3次)对老芒麦(Elymus sibiricus)栽培草地草产量及品质的影响。结果表明:播量对老芒麦再生性能、草产量和粗蛋白质产量影响极显著(P<0.01),而对酸性洗涤纤维(ADF)和中性洗涤纤维(NDF)含量无显著影响,且各指标均在播量D2(45kg/hm2)处理下表现最好。刈割次数则对其都有极显著的影响(P<0.01),且各指标均在刈割次数CF2(2次)处理下表现最好。两者的互作对再生强度、草产量和粗蛋白质产量影响极显著(P<0.01)。肃南牧区老芒麦人工草地的利用,在播量D2(45kg/hm2),刈割次数CF2(2次)为宜,不仅再生性能好、干物质产量和粗蛋白质产量高,而且品质好。For studying the influence of different seeding rate and mowing frequency on the yield and quality of E. sibiricus,the experiment with three kind of seeding rates and five kinds of mowing frequencies studied the regeneration performance,yield and quality（crude protein, acid drought fiber（ADF） and neutral drought fiber（NDF）） of E. sibiricus. The result showed that there were the significant difference in the regeneration perform ance, hay and NDF, difference yield and crude protein under the different seeding rates（P〈0.01）, no signficant difference in ADF The indicators were best under the seeding rate with the D2（45 kg/hm^2）. There were the signficant in the indictors under the the different mowing frequencies（P〈0.01）, the best performance were under the CF2（twice）. Interactions between the seeding rate and mowing frequency had a high significant influenceon regeneration intensity, hay yield of crude protein（P〈0. 01）. In general, the optimized combination of E. sibiricus in Sunan was the seeding rate （45 kg/hm^2）and the mowing frequency （twice per year）.

关 键 词：老芒麦 播量 刈割次数 产草量 品质 

分 类 号：S543[农业科学—作物学]