A meta-analysis on cover crop impact on soil water storage, succeeding crop yield, and water-use efficiency

doi:10.1016/j.agwat.2021.107085

	A meta-analysis on cover crop impact on soil water storage, succeeding crop yield, and water-use efficiency
	Wang, Jun 1,2; Zhang, Shaohong 2; Sainju, Upendra M.3; Ghimire, Rajan 4; Zhao, Fazhu 1,2
刊名	AGRICULTURAL WATER MANAGEMENT
	2021-10-01
卷号	256 页码:9
关键词	Crop yield Cover crop management Cover crop species Soil water Water use
ISSN号	0378-3774
DOI	10.1016/j.agwat.2021.107085
通讯作者	Wang, Jun(wangj@nwu.edu.cn) ; Ghimire, Rajan(rghimire@nmsu.edu)
英文摘要	Cover cropping is practiced to enhance soil health and sustain succeeding crop yield; however, the effect of cover crop on soil water storage, succeeding crop yield, and water-use efficiency (WUE) may not be consistent in all regions. A meta-analysis was carried out to evaluate the effect of cover crop on precipitation storage efficiency (PSE, the percent of precipitation that is stored in the soil during the fallow period), soil water storage at succeeding crop planting (SWSP), succeeding crop yield, and WUE from data collected from 117 studies across the world. Cover crop decreased PSE by 33.4% and soil water storage for the whole profile (SWSPT) at soil depth by 13.2%, but increased water storage to a depth of 30 cm (SWSP30) by 6.0% (P < 0.05) compared to no cover crop. Cover crop did not affect succeeding crop yield, but decreased evapotranspiration (ET) by 6.2% and increased WUE by 5.0% (P < 0.05) compared to no cover crop. The effect of cover crop on these parameters varied by soil and climatic conditions of various regions. Leaving cover crop residue at the soil surface or incorporating into the soil reduced PSE, SWSPT, and ET, but increased SWSP30 and WUE compared to residue removal. Maintaining cover crop biomass at 5 Mg ha(-1) and leaving a 20-d interval between cover crop termination and succeeding crop planting, also enhanced PSE and SWSP30. Although cover crop had minimal impact on succeeding crop yield, WUE of succeeding crops can be increased with cover cropping by decreasing evapotranspiration.
资助项目	Chinese Academy of Sciences Light of West China Program for Introduced Talent in the West ; National Natural Science Foundation of China[31570440] ; National Natural Science Foundation of China[31270484] ; Key International Scientific and Technological Cooperation and Exchange Project of Shaanxi Province, China[2020KWZ-010]
WOS关键词	SAN-JOAQUIN VALLEY ; ORGANIC-CARBON ; SUMMER FALLOW ; GREEN MANURES ; RYE ; WHEAT ; MANAGEMENT ; TILLAGE ; SYSTEMS ; FERTILIZER
WOS研究方向	Agriculture ; Water Resources
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000691096300003
资助机构	Chinese Academy of Sciences Light of West China Program for Introduced Talent in the West ; National Natural Science Foundation of China ; Key International Scientific and Technological Cooperation and Exchange Project of Shaanxi Province, China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/165028]
专题	中国科学院地理科学与资源研究所
通讯作者	Wang, Jun; Ghimire, Rajan
作者单位	1.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 2.Northwest Univ, Coll Urban & Environm Sci, Shaanxi Key Lab Earth Surface Syst & Environm Car, Xian 710127, Peoples R China 3.USDA ARS, Northern Plains Agr Res Lab, 1500 North Cent Ave, Sidney, MT 59270 USA 4.New Mexico State Univ, Agr Sci Ctr, 2346 State Rd 288, Clovis, NM 88101 USA
推荐引用方式 GB/T 7714	Wang, Jun,Zhang, Shaohong,Sainju, Upendra M.,et al. A meta-analysis on cover crop impact on soil water storage, succeeding crop yield, and water-use efficiency[J]. AGRICULTURAL WATER MANAGEMENT,2021,256:9.
APA	Wang, Jun,Zhang, Shaohong,Sainju, Upendra M.,Ghimire, Rajan,&Zhao, Fazhu.(2021).A meta-analysis on cover crop impact on soil water storage, succeeding crop yield, and water-use efficiency.AGRICULTURAL WATER MANAGEMENT,256,9.
MLA	Wang, Jun,et al."A meta-analysis on cover crop impact on soil water storage, succeeding crop yield, and water-use efficiency".AGRICULTURAL WATER MANAGEMENT 256(2021):9.