干旱区生态环境知识资源中心(Arid): Optimization of Subsurface Drip Irrigation Schedule of Alfalfa in Northwest China

Arid

DOI	10.3390/w15122242
	Optimization of Subsurface Drip Irrigation Schedule of Alfalfa in Northwest China
	Zheng, Hexiang; Wang, Biyu; Cao, Xuesong; Wu, Jiabin; Yan, Haofang; Tian, Delong
通讯作者	Yan, HF
来源期刊	WATER
EISSN	2073-4441
出版年	2023
卷号	15 期号:12
英文摘要	Determination of an optimum irrigation amount and buried depth of subsurface drip irrigation laterals is significantly important in improving crop yield and irrigation water using efficiency in arid regions. In this study, the effects of three irrigation volumes (15.0, 22.5 and 30.0 mm) and three burial depths (10, 20 and 30 cm) of drip laterals on water consumption, yield and water productivity of alfalfa were investigated in a field trial. The water balance equation and FAO-56 crop coefficient methods were applied to determine the evapotranspiration of alfalfa. The results showed that the alfalfa evapotranspiration estimated by the dual crop coefficient method was closer to the actual measured values. The alfalfa water consumption, yield and water productivity increased significantly (p < 0.01) with the increase in irrigation amount, but the increasing trend turned to decrease (p < 0.05) with the increase of the buried depth of the drip irrigation laterals. During the whole growing period of alfalfa, the total water consumption ranged from 400 to 500 mm, the total yield ranged from 7500 to 12,000 kg/hm(2) and the water productivity was 1.80 to 2.50 kg/m(3). An optimized irrigation amount of 22.5 to 30.0 mm for an irrigation event with a frequency of 5 to 7 days using buried drip irrigation with an irrigation lateral depth of 20 cm was recommended for alfalfa in the study area.
英文关键词	water consumption water productivity irrigation system buried depth
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001017915500001
WOS类目	Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/399035
推荐引用方式 GB/T 7714	Zheng, Hexiang,Wang, Biyu,Cao, Xuesong,et al. Optimization of Subsurface Drip Irrigation Schedule of Alfalfa in Northwest China[J],2023,15(12).
APA	Zheng, Hexiang,Wang, Biyu,Cao, Xuesong,Wu, Jiabin,Yan, Haofang,&Tian, Delong.(2023).Optimization of Subsurface Drip Irrigation Schedule of Alfalfa in Northwest China.WATER,15(12).
MLA	Zheng, Hexiang,et al."Optimization of Subsurface Drip Irrigation Schedule of Alfalfa in Northwest China".WATER 15.12(2023).