Arid
DOI10.1016/j.agwat.2020.06608
Effects of partial root-zone drying on alfalfa growth, yield and quality under subsurface drip irrigation
Wang, Yadong; Liu, Chun; Cui, Pengfei; Su, Derong
通讯作者Su, DR (corresponding author), Beijing Forestry Univ, Coll Grassland Sci, Beijing 100083, Peoples R China.
来源期刊AGRICULTURAL WATER MANAGEMENT
ISSN0378-3774
EISSN1873-2283
出版年2021
卷号245
英文摘要Water shortage is the most critical constraint for alfalfa (Medicago sativa L.) hay production in the arid areas of Northwest China. In this study, we evaluated the effectiveness of partial root-zone drying (PRD) with subsurface drip irrigation (SDI) for alfalfa and compared it with conventional subsurface drip irrigation (CI). Field plot tests were conducted in 2017 and 2018 with three irrigation treatments under partial root-zone drying SDI system. Conventional SDI systems were used as the control. The irrigation quotas were 10 mm, 20 mm, and 30 mm per week for PRD1, PRD2, and PRD3, respectively, and that for CI was 30 mm per week. The number of drip irrigations for alfalfa in the whole growing stage were 13 and 19 in 2017 and 2018, respectively. There were three harvests in 2017 and four harvests in 2018. The results showed that the plant height of PRD was 0.4-11.57 cm higher than that of CI under the same irrigation regime. Moreover, PRD decreased the annual hay yield of oneyear-old alfalfa, but increased the annual hay yield of two-year-old alfalfa, while in 2018 the annual hay yield increased by 832.27 kg ha(-1) as compared to that of CI. Moreover, PRD has marked effect on alfalfa quality under insufficient amounts of water applied (PRD1), with significantly decreased acid detergent fiber by 7.81-27.02% and neutral detergent fiber by 0.25-15.23%, and increased crude protein by 0.59-12.68%, compared with CI. Crop water productivity (WPC) of one-year-old alfalfa under PRD3 in 2017 increased by 4.15-15.33% relative to CI, while WPC of two-year-old alfalfa under PRD2 in 2018 increased by 1.66-44.32% relative to CI. These results suggest that the proposed PRD could be a promising technique for alfalfa production in the arid area of Northwest China, with improved WPC and positive effect on quality characteristics.
英文关键词Alfalfa Subsurface drip system Partial root-zone drying Water productivity
类型Article
语种英语
收录类别SCI-E
WOS记录号WOS:000606743100008
WOS关键词WATER-USE EFFICIENCY ; REGULATED DEFICIT IRRIGATION ; ALTERNATE FURROW IRRIGATION ; PHYSIOLOGICAL-RESPONSES ; FORAGE PRODUCTION ; FIELD ; SOIL ; MANAGEMENT ; L. ; PHOSPHORUS
WOS类目Agronomy ; Water Resources
WOS研究方向Agriculture ; Water Resources
来源机构北京林业大学
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/347641
作者单位[Wang, Yadong; Liu, Chun; Cui, Pengfei; Su, Derong] Beijing Forestry Univ, Coll Grassland Sci, Beijing 100083, Peoples R China
推荐引用方式
GB/T 7714
Wang, Yadong,Liu, Chun,Cui, Pengfei,et al. Effects of partial root-zone drying on alfalfa growth, yield and quality under subsurface drip irrigation[J]. 北京林业大学,2021,245.
APA Wang, Yadong,Liu, Chun,Cui, Pengfei,&Su, Derong.(2021).Effects of partial root-zone drying on alfalfa growth, yield and quality under subsurface drip irrigation.AGRICULTURAL WATER MANAGEMENT,245.
MLA Wang, Yadong,et al."Effects of partial root-zone drying on alfalfa growth, yield and quality under subsurface drip irrigation".AGRICULTURAL WATER MANAGEMENT 245(2021).
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