| Cite this article: | 王涛,蒲胜海,杨广,等.棉杆炭对黏土冬灌水分运移的影响[J].灌溉排水学报,0,():-. |
| wang tao,pu shenghai,yang guang,et al.棉杆炭对黏土冬灌水分运移的影响[J].灌溉排水学报,0,():-. |
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| Effect of Cotton Charcoal on Water Transport of Clay in Winter Irrigation |
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wang tao1,2, pu shenghai3,4,5, yang guang6,7, li pan3,4, ma xingwang3,4, ma honghong3,4,8, wang zeyu3,4, niu xinxiang3,4, liu xiaoli3,4
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1.CollegeofWaterConservancy&2.ArchitecturalEngineering,Shihezi University;3.Institute of Soil ,Fertilizer and Agricultural Water Saving, Xinjiang Academy of Agricultural Sciences;4.Key Laboratory of Northwest Oasis Agricultural Environment of Ministry of Agriculture and Rural Affairs;5.Xinjiang Huier Agricultural Group Co., Ltd.;6.College of Water Conservancy &7.Architectural Engineering,Shihezi University;8.Xinjiang Huier Agricultural Group Co., Ltd.,
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| Abstract: |
| Abstract:【Objective】The effects of cotton stalk charcoal on water infiltration capacity, infiltration characteristics and water allocation of clay in winter irrigation were discussed.【Method】Through one-dimensional soil column simulation experiment, the effects of three winter irrigation quotas (280, 340 and 400m3/ mu, denoted as W1, W2 and W3) and cotton stalk charcoal (0%, 1%, 2% and 4%, denoted as C0, C1, C2 and C4) on clay wetting front, cumulative infiltration amount, infiltration rate and water distribution were analyzed.【Result】The addition of cotton stalk carbon promotes the movement of wetting front, and the duration of carbon soil layer shows a single peak trend. The greater the addition amount, the shorter the time it takes for wetting front to reach the bottom of soil column. Compared with C0, the initial infiltration rate, the average infiltration rate, the steady infiltration rate and the steady infiltration rate of all treatments increased by 6.5%, 22.8% and 32.0%, 6.9%, 16.8% and 21.4%, 11.4%, 38.6% and 40.9% respectively. When the infiltration process reaches the bottom of the carbon soil layer (20cm), the cumulative infiltration of each treatment increases by 5.0%, 6.0% and 9.8% compared with C0, and increases by 1.2%, 4.5% and 6.3% at the bottom of the soil column. The cumulative infiltration increases with the addition of cotton stalk carbon. Under the treatments of W1, W2 and W3, the soil water-holding capacity accounts for 63.6%, 53.3% and 46.6% of the irrigation quota, and the water-holding capacity of the carbon soil layer is positively correlated with the amount of cotton stalk carbon added, with leakage accounting for 27.3%, 38.2% and 45.6% of the irrigation quota and evaporation accounting for about 8.5%.【Conclusion】The addition of cotton stalk carbon promotes the infiltration of clay water and increases the infiltration capacity of soil. The water-holding capacity of carbon soil layer is positively correlated with the addition of cotton stalk carbon, and the leakage is greatly affected by irrigation quota. This study enriches the application prospect of cotton stalk carbon, and provides theoretical basis and scientific support for clay improvement, improvement of irrigation utilization rate and irrigation management in winter. |
| Key words: Cotton charcoal; wetting front; soil moisture; winter irrigation; infiltration |
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