| Effects of aerated drip irrigation and biochar on physical and chemical properties of saline\|alkali soil and cotton yield |
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| DOI：10.7606/j.issn.1000-7601.2025.05.14 |
| Key Words: cotton aerated drip irrigation biochar saline\|alkali soil soil physical and chemical properties Xinjiang |
| Author Name | Affiliation | | WANG He | Key Laboratory of Land and Water Engineering in Arid Regions, Ministry of Education, Northwest A&F University, Yangling, Shaanxi 712100, China
College of Water Resources and Civil Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China | | NIU Wenquan | Key Laboratory of Land and Water Engineering in Arid Regions, Ministry of Education, Northwest A&F University, Yangling, Shaanxi 712100, China
Institute of Soil and Water Conservation, Ministry of Water Resources, Chinese Academy of Sciences, Yangling, Shaanxi 712100, China | | YAN Tinglin | Key Laboratory of Land and Water Engineering in Arid Regions, Ministry of Education, Northwest A&F University, Yangling, Shaanxi 712100, China
College of Water Resources and Civil Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China | | WANG Jiujiu | Key Laboratory of Land and Water Engineering in Arid Regions, Ministry of Education, Northwest A&F University, Yangling, Shaanxi 712100, China
College of Water Resources and Civil Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China | | LI Tiantian | Key Laboratory of Land and Water Engineering in Arid Regions, Ministry of Education, Northwest A&F University, Yangling, Shaanxi 712100, China
College of Water Resources and Civil Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China | | DU Yadan | Key Laboratory of Land and Water Engineering in Arid Regions, Ministry of Education, Northwest A&F University, Yangling, Shaanxi 712100, China
College of Water Resources and Civil Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China |
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| Abstract: |
| In order to formulate reasonable improvement measures for saline\|alkali soil and improve cotton yield and water use efficiency, two drip irrigation methods were set up: unaerated conventional drip irrigation (A0) and aerated drip irrigation (A1), and four biochar application rates: 0, 12, 24, and 36 t·hm-2 (B0, B12, B24, and B36). The effects of aerated drip irrigation and biochar on the physical and chemical properties of saline\|alkali soil and cotton yield were studied. The results showed that with the increase of biochar dosage, the soil bulk density decreased gradually, which was 8.63% lower than that of the B0 treatment. The soil porosity, pH value, and salt content increased gradually, with an increase of 12.57%, 2.62%, and 11.72%, respectively. The soil water content increased first and then decreased, and the increase of the B24 treatment was the largest, reaching 19.24%. Compared with the A0 treatment, the soil bulk density, water content, pH value, and salt content of the A1 treatment decreased by 4.71%, 9.27%, 0.82%, and 4.65%, respectively, and the soil porosity increased by 6.19% on average. Under the combined action of aerated drip irrigation and biochar, the cotton yield increased by 17.17% on average, and the water use efficiency increased by 13.55% on average. |
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