草地学报

›› 2005, Vol. 13 ›› Issue (2): 93-96,110.DOI: 10.11733/j.issn.1007-0435.2005.02.002

• 研究论文 • 上一篇    下一篇

刈割次数与留茬高度对内农1号苏丹草产草量和品质的影响

刘景辉, 赵宝平, 焦立新, 扈学文, 闫立伟, 郭冬梅   

  1. 内蒙古农业大学农学院, 内蒙古呼和浩特, 010019
  • 收稿日期:2004-08-31 修回日期:2005-02-15 出版日期:2005-05-15 发布日期:2005-05-15
  • 作者简介:刘景辉(1965- ),男,内蒙古通辽市奈曼旗人,教授,博士,主要从事耕作制度与农业生态系统研究
  • 基金资助:
    内蒙古农业大学博士启动基金(K12125)

Effect of Different Clipping Frequencies and Stubble Height on the Yield and Quality of Sorghum Sudanense Stapf. cv. Neinong No.1

LIU Jing-hui, ZHAO Bao-ping, JIAO Li-xin, HU Xue-wen, YAN Li-wei, GUO Dong-mei   

  1. Inner Mongolia Agricultural University, Huhhot, Inner Mongolia Autonomous Region 010019, China
  • Received:2004-08-31 Revised:2005-02-15 Online:2005-05-15 Published:2005-05-15

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摘要： 研究刈割次数和留茬高度对内农1号苏丹草(Sorghum sudanense Stapf.cv.NeinongNo.1)产草量及品质的影响。结果表明:在生育期间,刈割3次粗蛋白质产量最高,达到3.24t/hm2;刈割2次鲜草产量最高(96.80t/hm2);刈割1次干草产量最高(35.04t/hm2);留茬以8cm为宜,鲜草、干草及粗蛋白质产量分别达105.11、27.64和3.29t/hm2,高于或低于8cm均影响其再生速度、产草量和粗蛋白质含量。

关键词: 内农1号苏丹草, 刈割次数, 留茬高度, 产草量, 品质

Abstract: A study of the effect of different clipping frequencies and stubble height on the yield and quality of Sorghum sudanense Stapf. cv. Neinong No.1 indicated that: when clipping 3 times during the grass growing period, the crude protein yield was the highest (3.24 t/hm2). The green forage yield of two-time-clipping was the highest reaching 96.80 t/hm2. Clipping only once ascended the hay yield to 35.04 t/hm2, topping all. Leaving the stubble at an optimal height of 8 cm enhance the aftermath yield of green forage, hay, crude protein to 105.11 t/hm2, 27.64 t/hm2 and 3.29 t/hm2 respectively. Stubble that was higher or lower that 8 cm hindered the speed of grass regrowth, the yield of forage and its content of crude protein.

Key words: Sorghum sudanense Stapf. cv. Ninong No.1, Clipping times, Stubble height, Yield, Quality

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