Establishment and application of spring maize yield to evapotranspiration boundary function in the Loess Plateau of China

doi:10.1016/j.agwat.2016.10.004

	Establishment and application of spring maize yield to evapotranspiration boundary function in the Loess Plateau of China
	Lin, Wen 1,3; Liu, Wenzhao 1,2
刊名	AGRICULTURAL WATER MANAGEMENT
	2016-12-01
卷号	178 页码:345-349
关键词	Water-limited yield potential Boundary function Quantile regression Plastic film mulching
ISSN号	0378-3774
DOI	10.1016/j.agwat.2016.10.004
通讯作者	Liu, Wenzhao(wzliu@ms.iswc.ac.cn)
英文摘要	The yield to evapotranspiration (Y/ET) boundary function is a simple method for estimating water-limited yield potential and provides a guide for making proper crop management decisions in dryland areas. However, the original approach is arbitrary, and the boundary function is established without following any specific principles. In the present study, based on French & Schultz's boundary function concept and the quantile regression theory, and also linear interpolation to eliminate outliers, we developed an improved method in establishing the Y/ET boundary function. Taking spring maize in the Loess Plateau of China as a case study we selected fundamental data points obtained from 887 records found in 65 papers that were published between 1987 and 2014, and also linear interpolation to eliminate outliers. The results showed that the Y/ET boundary function was y = 60.5 x (x - 50) with a plateau yield of 15,954 kg ha(-1) when ET exceeded 314 mm. Without film mulching, the Y/ET boundary function was y =47.5 x (x - 62.3) with a plateau yield of 12,840 kg ha(-1) when ET exceeded 325 mm. We further compared three different crop production methods (plastic film mulching, straw mulching, and no mulching) on maize production in the Loess Plateau. Among these methods, plastic film mulching was the most effective, since it increased the yield potential of spring maize, regardless ET, and hence, improved water use efficiency. Overall, this study provides novel insights into the establishment of the Y/ET boundary functions using specific principles that increase accuracy and help to identify the most profitable crop management systems. (C) 2016 Elsevier B.V. All rights reserved.
资助项目	National Hightech R&D Program of China (863 Program)[2013AA102904] ; National Natural Science Foundation of China[41171033] ; National Natural Science Foundation of China[41571036]
WOS关键词	WATER-USE EFFICIENCY ; CROP MANAGEMENT ; DRYLAND WHEAT ; ENVIRONMENTS ; GROWTH ; REGION ; SOIL
WOS研究方向	Agriculture ; Water Resources
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000389087600032
资助机构	National Hightech R&D Program of China (863 Program) ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/65672]
专题	中国科学院地理科学与资源研究所
通讯作者	Liu, Wenzhao
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 A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Lin, Wen,Liu, Wenzhao. Establishment and application of spring maize yield to evapotranspiration boundary function in the Loess Plateau of China[J]. AGRICULTURAL WATER MANAGEMENT,2016,178:345-349.
APA	Lin, Wen,&Liu, Wenzhao.(2016).Establishment and application of spring maize yield to evapotranspiration boundary function in the Loess Plateau of China.AGRICULTURAL WATER MANAGEMENT,178,345-349.
MLA	Lin, Wen,et al."Establishment and application of spring maize yield to evapotranspiration boundary function in the Loess Plateau of China".AGRICULTURAL WATER MANAGEMENT 178(2016):345-349.