| 基于SWAP模型的春玉米咸水非充分灌溉模拟 |
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| 引用本文： | 袁成福,冯绍元,霍再林,王庆明.基于SWAP模型的春玉米咸水非充分灌溉模拟[J].排灌机械工程学报,2020,38(4):396-402. |
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| 作者姓名： | 袁成福 冯绍元 霍再林 王庆明 |
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| 作者单位： | 扬州大学水利科学与工程学院,江苏 扬州 225009;江西水利职业学院,江西 南昌330013;扬州大学水利科学与工程学院,江苏 扬州 225009;中国农业大学中国农业水问题研究中心,北京 100083;中国农业大学中国农业水问题研究中心,北京 100083;中国水利水电科学研究院水资源所,北京 100038 |
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| 基金项目： | 国家自然科学基金资助项目(51179166);高校博士点专项科研基金资助项目(20123250110004)。 |
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| 摘 要： | 为了探究石羊河流域适宜春玉米生长的咸水非充分灌溉模式,应用SWAP模型模拟不同灌溉模式下的土壤水盐平衡、春玉米相对产量和相对水分利用效率,并预测了较长时期土壤水盐动态变化规律.研究结果表明:灌溉水矿化度为0.71 g/L和3.00 g/L的春玉米最优灌溉模式为生育期内灌4次水,灌溉定额均为408 mm,2种灌溉模式均能达到节约灌溉用水、提高作物产量和水分利用效率以及减少土体盐分累积量的目的.较长时期土壤水盐动态变化规律模拟结果表明:在冬灌条件下,春玉米最优灌溉模式下的土壤水分和盐分能够在模拟期内保持相对平稳的状态;在不同年份,相同土层土壤含水率随着土层深度的增加而增大,0.71 g/L的淡水灌溉土壤盐分主要累积在40~80 cm土层,3.00 g/L的微咸水灌溉土壤盐分主要累积在10~40 cm土层;5 a的模拟结果表明0.71 g/L和3.00 g/L的水持续灌溉5 a,不会引起土壤次生盐渍化.
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| 关 键 词： | 春玉米 咸水 非充分灌溉 SWAP模型 土壤水盐动态 |
| 收稿时间： | 2018-04-11 |
Simulation of deficit irrigation with saline water for spring maize based on SWAP model |
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| YUAN Chengfu,FENG Shaoyuan,HUO Zailin,WANG Qingming.Simulation of deficit irrigation with saline water for spring maize based on SWAP model[J].Journal of Drainage and Irrigation Machinery Engineering,2020,38(4):396-402. |
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| Authors: | YUAN Chengfu FENG Shaoyuan HUO Zailin WANG Qingming |
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| Institution: | 1. College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou, Jiangsu 225009, China; 2. Jiangxi Water Resources Institute, Nanchang, Jiangxi 330013, China; 3. Centre for Agricultural Water Research in China, China Agricultural University, Beijing 100083, China; 4. Department of Water Resources, Institute of Water Resources and Hydropower Research, Beijing 100038, China |
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| Abstract: | In order to explore the appropriate management mode of deficit irrigation with saline water for spring maize growth in the Shiyang River Basin of Gansu province,the SWAP model was used to simulate soil water and salinity balance,relative spring maize yield and relative water use efficiency under different irrigation modes,and the long-term effects of soil water-salt dynamics were also predicted.The simulated results indicate that the optimal irrigation management mode for spring maize is to irrigate four times with total amount of 408 mm for irrigation water with 0.71 g/L and 3.00 g/L during the growing season of spring maize.The two irrigation modes can achieve the aim of saving irrigation water,improving crop yield and water use efficiency,and reducing the soil salt accumulation.The long-term simulation of soil water-salt dynamics indicates that the soil water content and soil salt content can remain relatively stable for the simulation period of time in the optimal irrigation mode of spring maize under winter irrigation.The soil water content increases with the increase of soil depth at the same soil layer in different years.The soil salt content mainly accumulates at the 40-80 cm soil layer under fresh water irrigation of 0.71 g/L and accumulates at the 10-40 cm soil layer under bracki-sh water irrigation of 3.00 g/L.Five-year simulation shows that the irrigation water with 0.71 g/L and 3.00 g/L will not result in soil secondary salinization. |
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| Keywords: | spring maize saline water deficit irrigation SWAP model soil water-salt dynamics |
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