干旱区生态环境知识资源中心(Arid): 刈割对牧草根系生长特征的影响

Arid

	刈割对牧草根系生长特征的影响
其他题名	Effect of Cutting Height on the Root Growth Characteristics of Forages
	张雪 1; 董建国 1; 汪有科 1; 白永红 1; 聂真义 2
来源期刊	草地学报
ISSN	1007-0435
出版年	2016
卷号	24 期号:2 页码:416-424
中文摘要	为探索半干旱区刈割对牧草根系特征的影响,本研究选用早熟禾(Poa pratensis L.)、白三叶(Trifolium repens L.)、毛苕子(Vicia villosa)为试验材料,采用室内和野外相结合的方法,研究了牧草根系特征对刈割的响应。结果表明:刈割可降低牧草根深、根长及根表面积。在刈割留茬3cm高度时,早熟禾根深、根长及根表面积较对照分别降低43.91%,51.85%,25.52%;白三叶根深、根长及根表面积较对照分别降低27.27%,47.04%,27.35%;毛苕子根深、根长及根表面积较对照分别降低20.34%,39.80%,40.39%。野外早熟禾刈割留茬9cm时根长密度最小,白三叶在刈割留茬3cm时根长密度最小,毛苕子刈割留茬6cm时根长密度最小。该研究对半干旱区牧草刈割留茬高度选择具有参考价值。
英文摘要	To explore the effect of harvest on the forages root traits in Semi-Arid Region,indoor and field experiment were conducted to test root characteristics of Poa pratensis,Trifolium repens and Vicia villosa. The results showed that cutting can reduce the root depth,root length and root surface area.The root depth,root length and root surface area of P.pratensis at 3cm stubble height were decreased by 43.91%, 51.85%and 25.52%compared to the control,respectively.At 3cm stubble height,the root depth,root length and root surface area of T.repens decreased by 27.27%,47.04%and 27.35%compared with the control,respectively.The root depth,root length and root surface area of V.villosaat 3cm stubble height were decreased by 20.34%,39.80%and 40.39%compared with the control,respectively.P.pratensisin field conditions showed the minimum root length density at 9cm stubble height and T.repens showed the minimum root length density at 3cm stubble height in field conditions,while V.villosashowed the minimum root length density at 6cm height in field conditions.The research provided very important reference values for the choice of stubble height of cutting forages in semi-arid region.
中文关键词	牧草 ; 刈割 ; 根系特性 ; 黄土丘陵区
英文关键词	Forages Clipping Root characteristics Loess hilly region
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRONOMY
WOS研究方向	Agriculture
CSCD记录号	CSCD:5742864
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/233951
作者单位	1.西北农林科技大学水利与建筑工程学院, 杨凌, 陕西 712100, 中国; 2.西北农林科技大学资源环境学院, 杨凌, 陕西 712100, 中国
推荐引用方式 GB/T 7714	张雪,董建国,汪有科,等. 刈割对牧草根系生长特征的影响[J]. 西北农林科技大学,2016,24(2):416-424.
APA	张雪,董建国,汪有科,白永红,&聂真义.(2016).刈割对牧草根系生长特征的影响.草地学报,24(2),416-424.
MLA	张雪,et al."刈割对牧草根系生长特征的影响".草地学报 24.2(2016):416-424.