数字农科院2.0

Side soil covering and high-frequency low-volume irrigation improve cotton seedling emergence by altering soil physical properties and salinity

文献类型： 外文期刊

作者： Gao, Fukui;Han, Qisheng;Sun, Jingsheng;Zhao, Qingyao;Yang, Guang;Zhang, Xianbo;Kpalari, Djifa Fidele;Ning, Huifeng;Liu, Hao

作者机构：

关键词： Dry sowing and wet emergence;Drip spring irrigation;Soil covering form;Soil covering thickness;Emergence depth;Water-saving and salt control

期刊名称： SOIL & TILLAGE RESEARCH

ISSN： 0167-1987

年卷期： 2025 年 258 卷

页码：

收录情况： SCIE（2025版） ; ; EI（2025版）

摘要： The southern Xinjiang region is currently facing a situation of high per capita water resources but low per land water resources. With the expansion of agricultural irrigation areas and extensive water use, the actual water consumption has far exceeded the red line of total water use, and the existing water resources can no longer meet the needs of normal winter and spring irrigation. The aim of this study is to learn from the water-saving planting technology of dry sowing and wet emergence (DSWE) to promote the sustainable development of agriculture and optimize soil covering methods and irrigation management measures in Northern Xinjiang. A field experiment was conducted from 2021 to 2024. The local non-growing season drip spring irrigation mode (CK1, spring irrigation quota 90 mm) and conventional spring irrigation mode (CK2, spring irrigation quota 180 mm) were used as controls. For the DSWE planting technology, two soil covering forms of top sealing soil (TSS) and side sealing soil (SSS) were set up, and four irrigation quotas (G1: 30 mm, G2: 37.5 mm, G3: 45 mm, G4: 52.5 mm) were applied under each soil covering form. The results indicated that the TSS form was more effective in providing stable soil moisture and temperature conditions, whereas the SSS form significantly increased the cotton emergence rate and shortened emergence time by minimizing sowing depth and physical barriers. Crucially, the SSS form effectively mitigated the negative impacts caused by the increased sowing depth inherent in DSWE technology. By optimizing the SSS approach with precise, low-volume irrigation, we achieved cotton emergence performance comparable to conventional irrigation methods, while realizing water savings of over 40 % and up to 70 % compared with standard practices. This research provides a practical and highly efficient strategy for applying DSWE technology in water-scarce, saline environments, offering significant potential for mitigating agricultural water-use conflicts and promoting sustainable development in arid regions.

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