| 余小玲,白晨赟,刘琦,韩晓阳,乔江波,朱元骏.秸秆和塑料残膜对农田土壤水分入渗的影响[J].干旱地区农业研究,2025,(3):99~106 |
| 秸秆和塑料残膜对农田土壤水分入渗的影响 |
| 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 |
| 中文关键词: 水分入渗；秸秆；残膜；Kostiakov模型 Philip模型；黄土高原 |
| 英文关键词:water infiltration straw plastic film residual Kostiakov model Philip model Loess Plateau region |
| 基金项目:国家自然科学基金（42377316） |
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| 中文摘要: |
| 黄土高原旱作农田中秸秆残体与地膜广泛共存，为探究其对土壤水分入渗的影响，开展室内土柱入渗模拟研究。设置2个秸秆添加水平（分别占土重的0%和1.2%）和4个残膜含量水平（分别占土重的0%、0.04%、0.08%和0.12%），分析不同土壤条件下的湿润锋运移、入渗时长、累积入渗量、入渗总量和入渗速率。结果表明：秸秆和塑料残膜共同掺入增强了残膜对湿润锋垂直运移的阻滞作用，残膜含量为0.08%时二者共存对湿润锋运移的阻滞作用最强；土壤中残膜含量低于0.08％时，掺入秸秆可显著降低累积入渗量和初始入渗速率（P<0.05），土壤中残膜含量为0.12％时，掺入秸秆可使累积入渗量和初始入渗速率显著提升（P<0.05）；Kostiakov模型和Philip模型拟合的决定系数R2均接近1，拟合效果较好。综上，土壤中塑料残膜低含量时秸秆会降低入渗能力，而塑料残膜含量较高时秸秆能减轻塑料残膜对入渗的负面影响，Kostiakov模型和Philip模型对研究黄土高原地区秸秆和塑料残膜共存条件下土壤水分入渗过程模拟具有较强的适用性。 |
| 英文摘要: |
| 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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