兰州大学机构库
Increased photosynthesis and grain yields in maize grown with less irrigation water combined with density adjustment in semiarid regions
Liu, Donghua1,2,3; Jia, Qianmin4; Li, Juan1,2,3; Zhang, Peng1,2,3; Ren, Xiaolong1,2,3; Jia, Zhikuan1,2,3
2020-10-06
Source PublicationPeerJ   Impact Factor & Quartile Of Published Year  The Latest Impact Factor & Quartile
ISSN2167-8359
Volume8
page numbers28
AbstractIn order to design a water-saving and high-yield maize planting model suitable for semiarid areas, we conducted trials by combining supplementary irrigation with different planting densities. Three planting densities (L: 52,500, M: 75,000, and H: 97,500 plants ha(-1)) and four supplementary irrigation modes (NI: no irrigation; IV: 375 m(3) ha(-1) during the 11-leaf stage; IS: 375 m(3) ha(-1) in the silking stage; and IVS: 375 m(3) ha(-1) during both stages) were tested. The irrigation treatments significantly increased the leaf relative water content, but the high planting density significantly decreased the relative water content during the silking and filling stages. After supplementary irrigation during the 11-leaf stage, IV and IVS significantly increased the photosynthetic capacity, but decreased the leaf water use efficiency. IS and IVS significantly increased the photosynthetic capacity after supplementary irrigation in the silking stage over two years. During the filling stage, IV, IS, and IVS increased the two-year average net photosynthetic rate by 17.0%, 27.2%, and 30.3%, respectively. The intercellular CO2 concentration increased as the density increased, whereas the stomatal conductance, transpiration rate, net photosynthetic rate, and leaf water use efficiency decreased, and the high planting density significantly reduced the leaf photosynthetic capacity. The highest grain yield was obtained using the IVS treatment under the medium planting density, but it did not differ significantly from that with the IS treatment. Furthermore, the IVS treatment used two times more water than the IS treatment. Thus, the medium planting density combined with supplementary irrigation during the silking stage was identified as a suitable water-saving planting model to improve the photosynthetic capacity and grain yield, and to cope with drought and water shortages in semiarid regions.
KeywordRainfall harvesting Net photosynthetic rate Supplemental irrigation Climate change Density
PublisherPEERJ INC
DOI10.7717/peerj.9959
Indexed BySCIE
Language英语
Funding ProjectProject of the National Science and Technology Support Plan during the 12th Five-Year Plan Period: Technology Integration and Demonstration of Drought-Resistant and Stable Farming in Northwest Dryland Areas[2012BAD09B03] ; China 111 Project[B12007] ; Research and Demonstration of Sustainable Intensification Technology of Dry Farming in Ningxia[2019BBF03011]
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000575389700010
PublisherPEERJ INC
Original Document TypeArticle
PMID 33083115
Citation statistics
Document Type期刊论文
Identifierhttps://ir.lzu.edu.cn/handle/262010/441441
Collection兰州大学
Corresponding AuthorJia, Zhikuan
Affiliation
1.Northwest A&F Univ, Coll Agron, Yingling, Peoples R China
2.Northwest A&F Univ, Inst Water Saving Agr Arid Areas China, Yingling, Peoples R China
3.Northwest A&F Univ, Key Lab Crop Physiecol & Tillage Sci North Wester, Minist Agr, Yingling, Peoples R China
4.Lanzhou Univ, Coll Pastoral Agr Sci & Technol, State Key Lab Grassland Agroecosyst, Key Lab Grassland Livestock Ind Innovat,Minist Ag, Lanzhou, Peoples R China
Recommended Citation
GB/T 7714
Liu, Donghua,Jia, Qianmin,Li, Juan,et al. Increased photosynthesis and grain yields in maize grown with less irrigation water combined with density adjustment in semiarid regions[J]. PeerJ,2020,8.
APA Liu, Donghua,Jia, Qianmin,Li, Juan,Zhang, Peng,Ren, Xiaolong,&Jia, Zhikuan.(2020).Increased photosynthesis and grain yields in maize grown with less irrigation water combined with density adjustment in semiarid regions.PeerJ,8.
MLA Liu, Donghua,et al."Increased photosynthesis and grain yields in maize grown with less irrigation water combined with density adjustment in semiarid regions".PeerJ 8(2020).
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