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ORIGINAL RESEARCH article
Front. Plant Sci.
Sec. Crop and Product Physiology
Volume 15 - 2024 |
doi: 10.3389/fpls.2024.1433719
Increasing cotton lint yield and water use efficiency for subsurface drip irrigation without mulching
Provisionally accepted- 1 Shihezi University, Shihezi, China
- 2 Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
- 3 Xinjiang Academy of Agricultural and Reclamation Sciences (XAARS), Shihezi, Xinjiang Uyghur Region, China
Planting without mulching can eliminate the residual film pollution caused by the long-term use of plastic film covers, but it will increase soil moisture evaporation and heat loss and severely reduce water use efficiency and cotton productivity in cotton (Gossypium hirsutum L.) fields in arid regions.It is unclear whether the advantages of subsurface drip irrigation and nighttime irrigation can be leveraged to reduce the amount of irrigation applied in fields, improve the soil and leaf hydrothermal environments, and increase the synchronicity of yield and water use efficiency (WUE). Therefore, in a two-year field experiment (2019-2020), cotton was grown under different irrigation treatments (I5, 3753 m 3 ha -1 ; I4, 3477 m 3 ha -1 ; I3, 3201 m 3 ha -1 ; I2, 2925 m 3 ha -1 ; and I1, 2649 m 3 ha -1 ). The soil volumetric moisture content, soil temperature, leaf relative water content (RWC), daily changes in gas exchange parameters, lint yield, and WUE were evaluated. The results showed that reducing irrigation can reduce the soil volumetric moisture content (0-40 cm soil layer), increase the soil temperature and soil temperature conductivity, and increase the leaf temperature, intercellular carbon
Keywords: WUE, water use efficiency, Ci, intercellular carbon dioxide concentration, Gs, stomatal conductance, Tr, transpiration rate, Pn, net photosynthetic rate, RWC, relative water content, DAE, days after Subsurface drip irrigation, Lint yield
Received: 16 May 2024; Accepted: 12 Jul 2024.
Copyright: © 2024 Li, Li, Shi, Shi, Tian, Wang, Hao, Wang and Luo. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence:
Hong-hai Luo, Shihezi University, Shihezi, China
Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.
Nan-nan Li
1