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Ultra-wide film mulching with moderate irrigation water salinity enhances cotton growth under drip irrigation in Xinjiang, China

文献类型： 外文期刊

作者： Ma, Zhanli 1 ; Liu, Jian 1 ; Zhang, Jinzhu 1 ; Yin, Feihu 4 ; Guo, Li 5 ; Wen, Yue 1 ; Song, Libing 1 ; Zhu, Yan 1 ; Liang, Yonghui 1 ; Wang, Zhenhua 1 ;

作者机构： 1.Shihezi Univ, Coll Water Conservancy & Architectural Engn, Shihezi 832000, Xinjiang, Peoples R China

2.Shihezi Univ, Key Lab Modern Water Saving Irrigat, Xinjiang Prod & Construct Grp, Shihezi 832000, Xinjiang, Peoples R China

3.Minist Agr & Rural Affairs, Key Lab Northwest Oasis Water Saving Agr, Shihezi, Peoples R China

4.Xinjiang Acad Agr & Reclamat Sci, Shihezi 832000, Peoples R China

5.Sichuan Univ, Coll Water Resource & Hydropower, State Key Lab Hydraul & Mt River Engn, Chengdu 610065, Peoples R China

关键词： Cotton; Yield; Water use efficiency; Soil hydrothermal environment; Plastic film width; Irrigation water salinity; Mulched drip irrigation

期刊名称：FIELD CROPS RESEARCH （ 影响因子：5.6； 五年影响因子：6.1 ）

ISSN： 0378-4290

年卷期： 2024 年 315 卷

页码：

收录情况： SCI

摘要： Context: Advancements in mulching drip irrigation for cotton cultivation have led to changes in plastic film width in Xinjiang, China. Concurrently, the application of brackish water for irrigation is increasingly becoming a common practice in areas where freshwater resources are limited. Objective: The effects of varying film widths and the salinity levels of irrigation water on soil hydrothermal properties, cotton growth, and yield are comprehensively investigated. Methods: A field experiment was carried out over two years (2021-2022) in Xinjiang, China. It involved testing three film widths (F1: ultra -wide film, 4.45 m; F2: wide film; 2.05 m, F3: narrow film; 1.45 m) and three levels of irrigation salinity (S1: 1 g L -1 , S2: 3 g L -1 , S3: 5 g L -1 ). Results: Wider film widths significantly increased soil water storage (SWS) and accumulated active temperature (SAT). Compared to F3, the SAT for F1 increased by 14.6-15.7 % in 2021 and by 14.1-15.8 % in 2022, respectively. Furthermore, increasing film width was found to promote cotton growth, enhance the photosynthetic capacity, and increase cotton yield by 19.2-24.1 % in 2021 and by 17.4-23.3 % in 2022, respectively. Importantly, irrigation water with a salinity level of 3 g L -1 had no adverse effect on cotton growth and development. However, an irrigation water salinity of 5 g L -1 significantly reduced cotton yield. The highest seed cotton yield and water use efficiency were observed under the S2F1 treatment, recording 5876 kg ha -1 and 11.55 kg ha -1 mm -1 in 2021, and 5905 kg ha -1 and 11.58 kg ha -1 mm -1 in 2022, respectively. Additionally, a structural equation model was developed to explore the interrelationships between the soil hydrothermal environment, cotton growth, photosynthetic capacity, and seed cotton yield. Conclusions: The findings highlight the benefits of using ultra -wide film (4.45 m) in conjunction with irrigation water having a salinity level of up to 3 g L -1 . This combination significantly improves cotton yield and water use efficiency, showcasing a promising approach for sustainable cotton cultivation in semi -arid regions.

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