干旱区生态环境知识资源中心(Arid): 内蒙古短花针茅草原植物水分及氮素利用效率对载畜率的响应

Arid

	内蒙古短花针茅草原植物水分及氮素利用效率对载畜率的响应
其他题名	Responses of Water and Nitrogen Use Efficiency to Stocking Rates in C_3,C_4 Plants of Stipa breviflora Steppe in Inner Mongolia
	王亚婷; 王玺; 朱国栋; 赵天启; 贾丽欣; 赵萌莉
来源期刊	中国草地学报
ISSN	1673-5021
出版年	2017
卷号	39 期号:6 页码:59-64
中文摘要	以内蒙古短花针茅草原为研究对象,探讨放牧对C_4、C_3植物水分及氮素利用效率的影响。结果表明:(1)C_3植物水分利用效率低于C_4植物;且随载畜率的增加,植物水分利用效率均显著(P <0.05)降低,倾向于节水型的保守生长。(2)C_3植物的N素含量及C/N均高于C_4植物,且随载畜率的增加N含量显著(P <0.05)增大,而C/N普遍降低(P <0.05),氮素的利用效率明显降低。(3)C_4植物中水分利用效率与氮素利用效率没有相关性,而在C_3植物中,二者成极显著正相关(P<0.01)。
英文摘要	Desert steppe of Stipa breviflora in Inner Mongolia was taken as the research object.The competition strategy of plants response to environment was studied by measuring plants water and nitrogen use efficiency.The effects of environmental water and nitrogen resources on plants physiological status were analyzed.The results showed that: (1) The water use efficiency of C_4 plants was higher than that of C_3 plants,with the increase of stocking rates,the water use efficiency of plants decreased significantly (P <0.05),plants tended to water conservation type of conservative growth.(2) The content of N and C/N in C_3 plants were higher than those in C_4 plants,and the content of N was significantly increased with the increase of stocking rates (P <0.05),while C/N decreased (P <0.05),plants nitrogen use efficiency was significantly reduced.(3) There was no correlation between water use efficiency and nitrogen use efficiency in C_4 plants (P>0.05),but in C_3 plants,there was significant positive correlation(P <0.01).
中文关键词	荒漠草原 ; 载畜率 ; 氮素利用效率 ; 水分利用效率
英文关键词	Desert steppe Stocking rates Nitrogen use efficiency Water use efficiency
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:6121299
来源机构	内蒙古农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/237001
作者单位	内蒙古农业大学草原与资源环境学院, 呼和浩特, 内蒙古 010019, 中国
推荐引用方式 GB/T 7714	王亚婷,王玺,朱国栋,等. 内蒙古短花针茅草原植物水分及氮素利用效率对载畜率的响应[J]. 内蒙古农业大学,2017,39(6):59-64.
APA	王亚婷,王玺,朱国栋,赵天启,贾丽欣,&赵萌莉.(2017).内蒙古短花针茅草原植物水分及氮素利用效率对载畜率的响应.中国草地学报,39(6),59-64.
MLA	王亚婷,et al."内蒙古短花针茅草原植物水分及氮素利用效率对载畜率的响应".中国草地学报 39.6(2017):59-64.