草地学报

草地学报 ›› 2015, Vol. 23 ›› Issue (4): 870-873.DOI: 10.11733/j.issn.1007-0435.2015.04.030

• 研究专报 • 上一篇    下一篇

锡林浩特市天然大针茅草原产草量及营养动态分析

孙林, 都帅, 张颖超, 刘鹰昊, 孙磊, 格根图, 贾玉山   

  1. 内蒙古农业大学生态环境学院, 内蒙古 呼和浩特 010019
  • 收稿日期:2014-10-08 修回日期:2015-01-23 出版日期:2015-08-15 发布日期:2015-08-26
  • 通讯作者: 贾玉山
  • 作者简介:孙林(1988-),女,内蒙古呼和浩特人,博士研究生,主要从事牧草加工与贮藏方面的研究,E-mail:sunlin2013@126.com
  • 基金资助:

    国家现代牧草产业技术体系(CARS-35)项目;内蒙古自治区2014年博士研究生科研创新项目“牧区天然牧草产品储备及饲喂技术体系研究”(B20141012914)资助

Dynamic Analyses of Grass Yield and Nutrition of Natural Stipa grandis grassland in Xilinhot

SUN Lin, DU Shuai, ZHANG Ying-chao, LIU Ying-hao, SUN Lei, Gegentu, JIA Yu-shan   

  1. College of Ecology and Environment Science, Inner Mongolia Agricultural University, Huhhot, Inner Mongolia 010019, China
  • Received:2014-10-08 Revised:2015-01-23 Online:2015-08-15 Published:2015-08-26

PDF

摘要：

为确定锡林浩特市天然大针茅草原最适收获期,获取质量兼优的天然牧草,采用样方法对大针茅(Stipa grandis)不同生育期产草量及营养成分进行测定分析。结果表明:混合牧草成熟期干草产量最高,孕穗期粗蛋白质含量和相对饲用价值最高。综合考虑干草产量、营养物质含量及相对饲用价值变化动态,天然大针茅草原的最佳收获期为抽穗—开花期。

关键词: 大针茅草地, 营养动态, 产草量, 收获期

Abstract:

The grass yield and nutrition content of Stipa grandis were measured in different growth periods in order to determine the optimal harvest time of Xilinhot natural Stipa grandis grassland for the excellent quality of natural grass. The results showed that the hay yield of mixed grass in mature stage was the highest compared to other stages. The relative feed value and crude protein content of mixed grass were the highest in booting stage. Therefore, comprehensive considering the dynamic changes of hay yield, nutrient content and relative feed value indicates that the optimal harvest time of natural Stipa grandis grassland is heading-flowering stage.

Key words: Stipa grandis grassland, Dynamic nutrition, Grass yield, Harvest time

中图分类号: