干旱区生态环境知识资源中心(Arid): Evaluation of irrigation water salinity and leaching fraction on the water productivity for crops

Arid

DOI	10.25165/j.ijabe.20201301.5047
	Evaluation of irrigation water salinity and leaching fraction on the water productivity for crops
	Ning, Songrui; Zhou, Beibei; Wang, Quanjiu; Tao, Wanghai
通讯作者	Zhou, Beibei
来源期刊	INTERNATIONAL JOURNAL OF AGRICULTURAL AND BIOLOGICAL ENGINEERING
ISSN	1934-6344
EISSN	1934-6352
出版年	2020
卷号	13 期号:1 页码:170-177
英文摘要	In arid and semi-arid irrigated croplands, the excessive accumulation of soluble salts in the root zone is an extensive problem that seriously limits crop yield and water productivity (WP). To avoid affects the yield potential of crops, the application of extra irrigation for leaching of excessive salts from the root zone was required. Quantitative knowledge of effects of the irrigation water salinity and leaching fraction (LF) on the relative yield (RY) and the unit water productivity of crop evapotranspiration (UWPET) and the unit water productivity of irrigation water (UWPI) were becoming gradually important. This article provided theoretical models for estimating the UWPs (UWPET and UWPI) and optimizing leaching fraction according to irrigation water salinity. In the present study, eight levels of irrigation water salinity (ECw = 0.25, 0.50, 0.75, 1, 2, 3, 4, and 5 dS/m) and 39 levels of LF values ranging from 0.04 to 0.80 were set and tested to assessing their effects on the RY and UWPs for four typical crops (barley, bean, wheat, and maize) with different salt tolerance levels. Almost every curve determined between the UWPs and LFs for the four crops had an inflection point. It was indicated that the UWPET and UWPI could be maximized by optimizing the LF under different irrigation water salinities. Furthermore, the linear regression relationships were established to estimate the maximum values of UWPs and their corresponding optimal LFs for four crops by using the irrigation water salinity. Moreover, the theoretical models for estimating the UWPs were validated by data of wheat from previous literature, and the models could be suitable with acceptable relative errors when LFs ranging from 0.07 to 0.17.
英文关键词	irrigation water salinity leaching fraction salt-tolerant crop salt stress crop yield water productivity
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000519715800020
WOS关键词	STEADY-STATE ; SOIL-SALINITY ; WHEAT ; REQUIREMENT ; MAIZE ; YIELD
WOS类目	Agricultural Engineering
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314736
作者单位	Xian Univ Technol, State Key Lab Ecohydraul Northwest Arid Reg China, Xian 710048, Peoples R China
推荐引用方式 GB/T 7714	Ning, Songrui,Zhou, Beibei,Wang, Quanjiu,et al. Evaluation of irrigation water salinity and leaching fraction on the water productivity for crops[J],2020,13(1):170-177.
APA	Ning, Songrui,Zhou, Beibei,Wang, Quanjiu,&Tao, Wanghai.(2020).Evaluation of irrigation water salinity and leaching fraction on the water productivity for crops.INTERNATIONAL JOURNAL OF AGRICULTURAL AND BIOLOGICAL ENGINEERING,13(1),170-177.
MLA	Ning, Songrui,et al."Evaluation of irrigation water salinity and leaching fraction on the water productivity for crops".INTERNATIONAL JOURNAL OF AGRICULTURAL AND BIOLOGICAL ENGINEERING 13.1(2020):170-177.