干旱区生态环境知识资源中心(Arid): Response of dry matter and water use efficiency of alfalfa to water and salinity stress in arid and semiarid regions of Northwest China

Arid

DOI	10.1016/j.agwat.2021.106934
	Response of dry matter and water use efficiency of alfalfa to water and salinity stress in arid and semiarid regions of Northwest China
	Qiu, Yuan; Fan, Yaqiong; Chen, Yang; Hao, Xinmei; Li, Sien; Kang, Shaozhong
通讯作者	Hao, XM (corresponding author), China Agr Univ, Ctr Agr Water Res China, 17 Qinghua East Rd, Beijing 100083, Peoples R China.
来源期刊	AGRICULTURAL WATER MANAGEMENT
ISSN	0378-3774
EISSN	1873-2283
出版年	2021
卷号	254
英文摘要	As the planting acreage has been expanding on salinized soils of arid and semiarid regions of Northwest China, it is important to understand how alfalfa dry matter (DM) and water use efficiency (WUE) respond to soil salinity stress under deficit irrigation. A test pit experiment with a total of twelve treatments combing three water levels of full (W1), medium (W2), and low irrigation (W3) and four salinity levels was conducted in Northwest China in 2016 and 2017. For salinity treatments, salt addition rate was 0, 2, 4, and 6 & permil; of 0-60 cm soil dry weight, referred as S0 - S3, respectively. Soil water content (SWC) and soil electrical conductivity (ECe) were measured regularly during the growth period, and DM and WUE for cut 2 and cut 3 of each year were presented. For alfalfa DM and WUE for both individual cut and the combination of the two cuts each year, both water and salinity stress were found significant while the interaction was consistently insignificant. Dry matter and WUE decreased continuously with less irrigation water and greater salinity stress in both years. On average, DM reduction was about 20%, 30%, and 58%, for S1, S2, and S3, respectively, relative to S0, while the reduction was 21% and 34% for W2 and W2, relative to W1. Simultaneous water and salinity stress had more negative effects on DM and WUE than a single stress. Total alfalfa DM was found linearly correlated with average ECe over the growth period with R2 larger than 0.8, suggesting that ECe is an effective predictor for estimating alfalfa yield on saline soils in the area. The results are valuable in evaluating the productivity of saline soils in the region, and the performance of some remedy measures.
英文关键词	Soil electrical conductivity Soil water content Deficit irrigation Saline soils Actual evapotranspiration
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000670054800002
WOS关键词	MEDICAGO-SATIVA-L. ; DEFICIT IRRIGATION ; SEED PRODUCTION ; DROUGHT STRESS ; SALT STRESS ; MAIZE ; GROWTH ; SOIL ; PRODUCTIVITY ; PLANTS
WOS类目	Agronomy ; Water Resources
WOS研究方向	Agriculture ; Water Resources
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/2XILL650/368590
作者单位	[Qiu, Yuan; Chen, Yang; Hao, Xinmei; Li, Sien; Kang, Shaozhong] China Agr Univ, Ctr Agr Water Res China, 17 Qinghua East Rd, Beijing 100083, Peoples R China; [Fan, Yaqiong] Taiyuan Univ Technol, Coll Water Resources Sci & Engn, Taiyuan 030024, Peoples R China; [Qiu, Yuan; Chen, Yang; Hao, Xinmei; Li, Sien; Kang, Shaozhong] Minist Agr & Rural Affairs, Wuwei Expt Stn Efficient Water Use Agr, Wuwei, Peoples R China
推荐引用方式 GB/T 7714	Qiu, Yuan,Fan, Yaqiong,Chen, Yang,et al. Response of dry matter and water use efficiency of alfalfa to water and salinity stress in arid and semiarid regions of Northwest China[J]. 中国农业大学,2021,254.
APA	Qiu, Yuan,Fan, Yaqiong,Chen, Yang,Hao, Xinmei,Li, Sien,&Kang, Shaozhong.(2021).Response of dry matter and water use efficiency of alfalfa to water and salinity stress in arid and semiarid regions of Northwest China.AGRICULTURAL WATER MANAGEMENT,254.
MLA	Qiu, Yuan,et al."Response of dry matter and water use efficiency of alfalfa to water and salinity stress in arid and semiarid regions of Northwest China".AGRICULTURAL WATER MANAGEMENT 254(2021).