| Effects of straw and plastic residue film on soil water infiltration in farmland |
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| DOI：10.7606/j.issn.1000-7601.2025.03.11 |
| Key Words: water infiltration straw plastic film residual Kostiakov model Philip model Loess Plateau region |
| Author Name | Affiliation | | YU Xiaoling | The Research Center of Soil and Water Conservation and Ecological Environment, Chinese Academy of Sciences and Ministry of Education, Yangling, Shaanxi 712100, China
Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China
University of Chinese Academy of Sciences, Beijing 100049, China | | BAI Chenyun | College of Soil and Water Conservation Science and Engineering (Institute of Soil and Water Conservation), Northwest A&F University, State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Yangling, Shaanxi 712100, China | | LIU Qi | The Research Center of Soil and Water Conservation and Ecological Environment, Chinese Academy of Sciences and Ministry of Education, Yangling, Shaanxi 712100, China
Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China
University of Chinese Academy of Sciences, Beijing 100049, China | | HAN Xiaoyang | The Research Center of Soil and Water Conservation and Ecological Environment, Chinese Academy of Sciences and Ministry of Education, Yangling, Shaanxi 712100, China
College of Soil and Water Conservation Science and Engineering (Institute of Soil and Water Conservation), Northwest A&F University, State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Yangling, Shaanxi 712100, China | | QIAO Jiangbo | The Research Center of Soil and Water Conservation and Ecological Environment, Chinese Academy of Sciences and Ministry of Education, Yangling, Shaanxi 712100, China
College of Soil and Water Conservation Science and Engineering (Institute of Soil and Water Conservation), Northwest A&F University, State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Yangling, Shaanxi 712100, China | | ZHU Yuanjun | The Research Center of Soil and Water Conservation and Ecological Environment, Chinese Academy of Sciences and Ministry of Education, Yangling, Shaanxi 712100, China
Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China
University of Chinese Academy of Sciences, Beijing 100049, China
College of Soil and Water Conservation Science and Engineering (Institute of Soil and Water Conservation), Northwest A&F University, State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Yangling, Shaanxi 712100, China |
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| Abstract: |
| In the dryland farmlands of the Loess Plateau, residual straw and plastic film commonly coexist. This study was conducted to investigate their effects on soil water infiltration. A total of 8 treatments were set up, including 2 levels of straw addition (0% and 1.2% of soil weight) and 4 levels of plastic film content (0%, 0.04%, 0.08%, and 0.12% of soil weight), to analyze the movement of wetting front, infiltration time, cumulative infiltration, total infiltration, and infiltration rate under different soil additive conditions. The results showed that the mixture of straw and plastic residue enhanced the blocking effect of residual film on the vertical migration of wet front, and the coexistence of residual film content was the strongest when the residual film content was 0.08%. When the residual film content in soil was lower than 0.08%, the cumulative infiltration and initial infiltration rate were significantly reduced by straw incorporation (P<0.05). When the residual film content in soil was 0.12%, the cumulative infiltration and initial infiltration rate were significantly increased by straw incorporation (P<0.05). The determination coefficient R2 of Kostiakov model and Philip model is close to 1, and the fitting effect is good. In summary, when the plastic film residue content in the soil is low, straw reduces the infiltration capacity. However, when the plastic film residue content is high, straw helps mitigate the negative impact of plastic residue on infiltration. Both the Kostiakov and Philip models demonstrated a good fit to the infiltration data from soils containing straw and plastic film residue in the Loess Plateau. |
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