| 地下加气渗灌对土壤水分入渗速率及水盐分布的影响 |
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| 引用本文： | 王学成,王则玉,姚宝林,朱珠,刘冉.地下加气渗灌对土壤水分入渗速率及水盐分布的影响[J].新疆农业科学,2023,60(1):206-214. |
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| 作者姓名： | 王学成 王则玉 姚宝林 朱珠 刘冉 |
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| 作者单位： | 1.塔里木大学水利与建筑工程学院,新疆阿拉尔 8433002.塔里木大学现代农业工程重点实验室,新疆阿拉尔 8433003.新疆农业科学研究院土壤肥料与农业节水研究所,乌鲁木齐 830000 |
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| 基金项目： | 自治区公益性科研院所基本科研业务经费“酸化生物炭输入对新疆重盐碱土壤影响机制研究”(KY2021120);塔里木大学研究生科研创新项目(TDGRI202043);新疆维吾尔自治区教育厅普通高等学校现代农业工程重点实验室开放课题(TDNG20180701);国家自然科学基金(51969028) |
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| 摘 要： | 【目的】研究加气渗灌模式下土壤水盐运移规律，为新疆南疆地区节水灌溉方式和盐碱地改良方法提供借鉴。【方法】采用室内土箱试验，设置处理为标准加气量，灌前加气(T1),灌水中间段加气(T2);1.5倍标准加气量灌前加气(T3),灌水中间段加气(T4)的两因素两水平完全试验，并设置不加气处理CK为对照组，灌水量统一设置为13 L。灌水结束后静置24 h,取样分析水分在土壤中的入渗速率和湿润体内水分及盐分分布。【结果】加气处理较不加气处理灌水结束时间更早。T1,T2,T3,T4处理灌水时间较CK处理分别缩短8.70%,28.99%,31.88%和43.48%,加气处理较CK处理土壤中水分入渗速率更快。加气量增加，入渗速率也随之增加。在距渗灌管水平距离0 cm,一维纵深20～30 cm处土壤平均质量含水率分别为16.2%,13.31%,14.61%,13.07%,13.21%。在距渗灌管水平距离15 cm,一维纵深10～35...
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| 关 键 词： | 加气渗灌 入渗速率 湿润体 水盐分布 |
| 收稿时间： | 2022-04-29 |
Effects of Aerated Infiltration Irrigation on Soil Water Infiltration Rate and Water Salt Distribution |
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| WANG Xuecheng,WANG Zeyu,YAO Baolin,ZHU Zhu,LIU Ran.Effects of Aerated Infiltration Irrigation on Soil Water Infiltration Rate and Water Salt Distribution[J].Xinjiang Agricultural Sciences,2023,60(1):206-214. |
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| Authors: | WANG Xuecheng WANG Zeyu YAO Baolin ZHU Zhu LIU Ran |
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| Institution: | 1. College of Water Conservancy and Architectural Engineering, Tarim University, Alar Xinjiang 843300, China2. Key Laboratory of Modern Agricultural Engineering, Tarim University, Alar Xinjiang 843300,China3. Research Institute of Soil, Fertilizer and Agricultural Water Conservation, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China |
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| Abstract: | 【Objective】 To save agricultural water in southern Xinjiang and explore the movement law of soil water and salt under aerated infiltration irrigation mode with a view to providing reference for improving saline alkali land in that region. 【Methods】 Through the indoor soil box test, two factors and two levels of complete test were set as follows: adding standard air volume before irrigation (T1), adding standard air volume in the middle section of irrigation (T2), 1.5 times of standard air volume before irrigation (T3), 1.5 times of standard air volume in the middle section of irrigation (T4), and no aeration treatment CK.The irrigation amount was set to 13 L.After irrigation, standing for 24 hours, the infiltration rate of water in soil and the distribution of water and salt in wet body were analyzed. 【Results】 The results showed that the irrigation end time of aerated treatment was earlier than that of non aerated treatment.The irrigation time of T1, T2, T3 and T4 treatments was 8.70%, 28.99%, 31.88% and 43.48% shorter than that of CK treatment respectively, which indicated that the infiltration rate of soil water in aerated treatment was faster than that in CK treatment, and the infiltration rate also increased with the increase of aeration.The average mass moisture content of soil at the horizontal distance of 0 cm and one-dimensional depth of 20-30 cm were 16.2%, 13.31%, 14.61%, 13.07% and 13.21%, respectively.The average mass moisture content of soil was 5.68%, 8.65%, 8.72%, 8.74% and 9.49% respectively at the horizontal distance of 15 cm and one-dimensional depth of 10-35cm from the infiltration irrigation pipe. 【Conclusion】 This indicated that the moisture distribution of aerated treatment was more uniform than that of CK treatment.Compared with CK treatment, aerated treatment had larger range of water infiltration and desalination, and better effect of salt washing.Under the same aeration rate, the effect of aeration in the middle of irrigation was better than that before irrigation.Therefore, it is suggested to adopt the way of aeration in the middle section of irrigation to increase the amount of aeration so as to obtain a larger range of infiltration and desalination. |
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| Keywords: | aerated infiltration irrigation infiltration rate moist body water salt distribution |
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