干旱区生态环境知识资源中心(Arid): A lack of complementarity for water acquisition limits yield advantage of oats/vetch intercropping in a semi-arid condition

Arid

DOI	10.1016/j.agwat.2019.105778
	A lack of complementarity for water acquisition limits yield advantage of oats/vetch intercropping in a semi-arid condition
	Zhang, Yue 1,2; Duan, Yu 2,3; Nie, Jiayi 1; Yang, Jie 1; Ren, Jianhong 1,2; van der Werf, Wopke 4; Evers, Jochem B.4; Zhang, Jun 2,3; Su, Zhicheng 5; Zhang, Lizhen 1,2
通讯作者	Zhang, Lizhen
来源期刊	AGRICULTURAL WATER MANAGEMENT
ISSN	0378-3774
EISSN	1873-2283
出版年	2019
卷号	225
英文摘要	Oats (Avena sativa L.) and hairy vetch (Vicia villosa) are well adapted crop species for production in semi-arid environments, such as in Inner Mongolia, China, where due to variable rainfall, farmers do not apply fertilizer. We hypothesized that the use of a mixture of a cereal and a legume could enhance yields under these low input conditions, because integrating an N-fixing legume in the system could mitigate N limitation for the cereal and enhance its growth. A nine-year (2008-2016) field experiment was set up with three treatments: sole oats, sole vetch and oats/vetch strip intercropping. These cropping systems were grown continuously in the same plots, to allow accrual of long-term effects. Yields and water use were quantified in years 7-9 of the experiment (2014 to 2016). With a 50/50 ratio of the area sown to the two species, the intercropped oats had a relative yield of 0.59 and intercropped vetch had a relative yield of 0.45. Oats was the dominant crop characterized by a relative yield per plant of 1.18, compared to a relative yield per plant of vetch of 0.89. However, the land equivalent ratio (LER), expressing the comparative efficiency of land use in intercropping, and the water equivalent ratio (WER), the comparative system level water use efficiency of the intercrop relative to sole crops, were both not significantly different from one. Thus we reject the hypothesis that oat/vetch intercropping increases land productivity and water use efficiency. From differences in results in years with more rainfall and years with less rainfall, we infer that yields of both species are mostly limited by water availability. On average over the three years, the yield disadvantage of vetch was fully compensated by the yield advantage of oats, due to a lack of complementarity for water acquisition. This conclusion can be generalized to the testable prediction that species selection for productive intercropping should focus on achieving complementarity for traits that interact with the factor most constraining productivity, which was rainfall in this particular crop system under the conditions of the study.
英文关键词	Productivity Land equivalent ratio Water use efficiency Water equivalent ratio Daily water use
类型	Article
语种	英语
国家	Peoples R China ; Netherlands
收录类别	SCI-E
WOS记录号	WOS:000495462200017
WOS关键词	INTERSPECIFIC INTERACTIONS ; AGROPASTORAL ECOTONE ; USE EFFICIENCY ; COMMON VETCH ; SYSTEMS ; GROWTH ; COMPETITION ; BARLEY ; LIGHT ; WHEAT
WOS类目	Agronomy ; Water Resources
WOS研究方向	Agriculture ; Water Resources
EI主题词	2019-11-20
来源机构	中国农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310954
作者单位	1.China Agr Univ, Coll Resources & Environm Sci, Yuanmingyuan West Rd 2, Beijing 100193, Peoples R China; 2.Minist Agr, Sci & Observing Expt Stn Agroenvironm, Wuchuan 010031, Hohhot, Peoples R China; 3.Inner Mongolia Acad Agr & Anim Husb Sci, Plant Nutr & Anal Inst, Zhaojun RD 22, Yuquan Dist 010031, Huhhot, Peoples R China; 4.Wageningen Univ, Ctr Crop Syst Anal CSA, Droevendaalsesteeg 1, NL-6708 PB Wageningen, Netherlands; 5.China Inst Water Resources & Hydropower Res, Beijing 100038, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Yue,Duan, Yu,Nie, Jiayi,et al. A lack of complementarity for water acquisition limits yield advantage of oats/vetch intercropping in a semi-arid condition[J]. 中国农业大学,2019,225.
APA	Zhang, Yue.,Duan, Yu.,Nie, Jiayi.,Yang, Jie.,Ren, Jianhong.,...&Zhang, Lizhen.(2019).A lack of complementarity for water acquisition limits yield advantage of oats/vetch intercropping in a semi-arid condition.AGRICULTURAL WATER MANAGEMENT,225.
MLA	Zhang, Yue,et al."A lack of complementarity for water acquisition limits yield advantage of oats/vetch intercropping in a semi-arid condition".AGRICULTURAL WATER MANAGEMENT 225(2019).