| 施加PAM与CMC对土壤水分入渗与蒸发特征的影响 |
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| 引用本文： | 哈丽代姆·居麦,宁松瑞,王全九,张继红.施加PAM与CMC对土壤水分入渗与蒸发特征的影响[J].水土保持学报,2020,34(1):121-127,134. |
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| 作者姓名： | 哈丽代姆·居麦 宁松瑞 王全九 张继红 |
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| 作者单位： | 西安理工大学西北旱区生态水利工程国家重点实验室, 西安 710048,西安理工大学西北旱区生态水利工程国家重点实验室, 西安 710048,西安理工大学西北旱区生态水利工程国家重点实验室, 西安 710048;中科院水利部水土保持研究所, 黄土高原土壤侵蚀与旱地农业国家重点实验室, 陕西 杨凌 712100,西安理工大学西北旱区生态水利工程国家重点实验室, 西安 710048 |
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| 基金项目： | 国家自然科学基金项目（41830754，51679190）；新疆维吾尔自治区重大科技专项（2016A03008） |
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| 摘 要： | 施加化学改良剂是改良土壤和提高农田水分有效性的重要途径,深入了解化学改良剂对土壤水分运动过程的影响是合理利用化学方法改良土壤的基础。通过开展室内土柱试验研究表施聚丙烯酰胺(PAM)和羧甲基纤维素钠(CMC)2种化学改良剂,分析不同施量的化学改良剂(PAM和CMC)对土壤水分入渗和蒸发特征的影响。结果表明:随着PAM和CMC施加量的增加,不同化学改良剂均降低了土壤水分入渗过程,抑制了土面蒸发过程。综合考虑不同化学改良剂的保水、抑蒸性能,施加CMC的减渗、抑蒸作用高于施用PAM,且CMC施量为0.08%的效果最佳。同等减渗、抑蒸效果下,CMC的施用量相对PAM的施用量更少。
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| 关 键 词： | 聚丙烯酰胺(PAM) 羧甲基纤维素钠(CMC) 一维垂直入渗 土面蒸发 化学改良剂 土壤改良 |
| 收稿时间： | 2019/7/12 0:00:00 |
Comparative Analysis of the Effects of PAM and CMC on Soil Infiltration and Evaporation |
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| JUMAI Halidaimu,NING Songrui,WANG Quanjiu and ZHANG Jihong.Comparative Analysis of the Effects of PAM and CMC on Soil Infiltration and Evaporation[J].Journal of Soil and Water Conservation,2020,34(1):121-127,134. |
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| Authors: | JUMAI Halidaimu NING Songrui WANG Quanjiu and ZHANG Jihong |
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| Institution: | State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi''an University of Technology, Xi''an 710048,State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi''an University of Technology, Xi''an 710048,State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi''an University of Technology, Xi''an 710048;State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Science and Ministry of Water Resources, Yangling, Shaanxi 712100 and State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi''an University of Technology, Xi''an 710048 |
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| Abstract: | The application of chemical amendments is an important way to improve soil and water availability of farmland. It is the basis for rational use of chemical methods to improve soil by understanding the effects of chemical amendments on soil water movement processes. In this study, the effects of different chemical amendments on soil infiltration and evaporation characteristics were studied by applying different rates of polyacrylamide (PAM) and sodium carboxymethyl cellulose (CMC). The results showed that with the increasing rates of chemical amendments applied, both amendments hindered soil water infiltration and inhibited soil surface evaporation. Considering the performance of water retention and evaporation inhibition for different amendments, the effect of applying CMC was higher than that of PAM, and the CMC application rate of 0.08% was the best. Under the same effect on water retention and evaporation inhibition, the application rate of CMC was less than that of PAM, and thus CMC had a wider application prospect. This study could provide a theoretical reference for rational use of chemical amendments for soil water retention and evaporation inhibition. |
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| Keywords: | polyacrylamide (PAM) sodium carboxymethyl cellulose (CMC) one-dimensional vertical infiltration soil evaporation chemical amendment soil improvement |
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