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Establishment and application of spring maize yield to evapotranspiration boundary function in the Loess Plateau of China
Lin, Wen1,3; Liu, Wenzhao1,2
2016-12-01
Source PublicationAGRICULTURAL WATER MANAGEMENT
ISSN0378-3774
Volume178Pages:345-349
Corresponding AuthorLiu, Wenzhao(wzliu@ms.iswc.ac.cn)
AbstractThe 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.
KeywordWater-limited yield potential Boundary function Quantile regression Plastic film mulching
DOI10.1016/j.agwat.2016.10.004
WOS KeywordWATER-USE EFFICIENCY ; CROP MANAGEMENT ; DRYLAND WHEAT ; ENVIRONMENTS ; GROWTH ; REGION ; SOIL
Indexed BySCI
Language英语
Funding ProjectNational Hightech R&D Program of China (863 Program)[2013AA102904] ; National Natural Science Foundation of China[41171033] ; National Natural Science Foundation of China[41571036]
Funding OrganizationNational Hightech R&D Program of China (863 Program) ; National Natural Science Foundation of China
WOS Research AreaAgriculture ; Water Resources
WOS SubjectAgronomy ; Water Resources
WOS IDWOS:000389087600032
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/65673
Collection中国科学院地理科学与资源研究所
Corresponding AuthorLiu, Wenzhao
Affiliation1.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
Recommended Citation
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.
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