兰州大学机构库
Irrigation during Flowering Improves Subsoil Water Uptake and Grain Yield in Rainfed Soybean
He, Jin1,2; Jin, Yi2; Turner, Neil C.3,4; Li, FM(李凤民)2
2020-01
Source PublicationAGRONOMY-BASEL   Impact Factor & Quartile Of Published Year  The Latest Impact Factor & Quartile
EISSN2073-4395
Volume10Issue:1
page numbers15
AbstractWater is the main factor limiting soybean yield and the timely supply of supplemental irrigation could increase the grain yield, but the effects of a supplemental water supply on soybean yields have not been well studied. Field and pot experiments were conducted to compare the grain yield, yield components, water use efficiency for grain yield (WUEG), flower number, filled-pod number, soil water content, and root dry weight at different depths with and without supplemental irrigation at flowering. Field experiments showed that compared to rainfed conditions, 40 mm of water applied during flowering significantly increased grain yield by 26%, WUEG by 12%, filled-pod number by 16%, grain number by 13.3%, and water uptake from soil by 11% in 2011, and increased grain yield by 22%, WUEG by 7%, filled-pod number by 26%, grain number by 27%, and water uptake by 21% in 2012. The soil water content in the subsoil (1.2-2.0 m) layers under the irrigated treatment was lower, indicating greater water extraction, than in the rainfed treatment and water uptake was significantly and positively correlated with yield in both years. In a pot experiment, flower and filled-pod number, water use during flowering and podding were significantly higher in the well-watered (WW) treatment than cyclic water stress (WS) treatment. Flower number and filled-pod number were significantly and positively correlated with water use during flowering and podding, respectively, under both the WW and WS treatments. The root dry weight was higher in the 0.2-0.8 m soil layer in the WW treatment than the WS treatment. We conclude that supplementary water at flowering increased the water uptake from deeper soil layers by increasing the distribution of roots in the subsoil layers that resulted in the production of more flowers and filled pods and increased the WUEG and grain yield.
Keywordwater supply water uptake root distribution grain yield
PublisherMDPI
DOI10.3390/agronomy10010120
Indexed BySCIE
Language英语
Funding ProjectGuizhou Science and Technology Support Program Project[Qiankehezhicheng (2019) 2399] ; Guizhou University Introduction of Talent Research Projects[guidarenjihezi (2017) 048] ; Key Laboratory of Soil Quality Safety and the Regulation of Water and Fertilizer of Guizhou Province[Qianjiaohe KY 2016 (001)] ; Guizhou Provincial Biology First-Class Subject Construction Project[GNYL (2017) 009] ; National Key Crop Breeding Program of China[2017YFD0100900] ; National Key Research and Development Program of China[2018YFC1802602]
WOS Research AreaAgriculture ; Plant Sciences
WOS SubjectAgronomy ; Plant Sciences
WOS IDWOS:000513232600120
PublisherMDPI
Original Document TypeArticle
Citation statistics
Document Type期刊论文
Identifierhttps://ir.lzu.edu.cn/handle/262010/417575
Collection兰州大学
生命科学学院
Corresponding AuthorHe, Jin
Affiliation
1.Guizhou Univ, Coll Agr, Key Lab Plant Resource Conservat & Germplasm Inno, Minist Educ, Guiyang 550025, Peoples R China
2.Lanzhou Univ, Sch Life Sci, Inst Arid Agroecol, State Key Lab Grassland Agroecosyst, Lanzhou 730000, Peoples R China
3.Univ Western Australia, UWA Inst Agr, M082,Locked Bag 5005, Perth, WA 6001, Australia
4.Univ Western Australia, UWA Sch Agr & Environm, M082,Locked Bag 5005, Perth, WA 6001, Australia
First Author AffilicationSchool of Life Sciences
Corresponding Author AffilicationSchool of Life Sciences
Recommended Citation
GB/T 7714
He, Jin,Jin, Yi,Turner, Neil C.,et al. Irrigation during Flowering Improves Subsoil Water Uptake and Grain Yield in Rainfed Soybean[J]. AGRONOMY-BASEL,2020,10(1).
APA He, Jin,Jin, Yi,Turner, Neil C.,&Li, Feng-Min.(2020).Irrigation during Flowering Improves Subsoil Water Uptake and Grain Yield in Rainfed Soybean.AGRONOMY-BASEL,10(1).
MLA He, Jin,et al."Irrigation during Flowering Improves Subsoil Water Uptake and Grain Yield in Rainfed Soybean".AGRONOMY-BASEL 10.1(2020).
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