| 引用本文: | 仲昭易,张 瑜,冯绍元,等.秸秆深埋结合地膜覆盖土壤水盐运移模拟试验研究[J].灌溉排水学报,2019,38(6):25-30. |
| ,et al.秸秆深埋结合地膜覆盖土壤水盐运移模拟试验研究[J].灌溉排水学报,2019,38(6):25-30. |
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| 摘要: |
| 【目的】探究滨海地区盐渍土在春秋季节强烈返盐问题的治理方法。【方法】通过室内土柱模拟实验，研究了覆膜和秸秆深埋对盐碱土水分入渗、蒸发及水盐运移特性的影响。【结果】淋洗入渗阶段，秸秆深埋可减缓水分入渗速度，优化耕层水盐分布，在提高耕层土壤含水率的同时增强了淋盐效果。潜水蒸发阶段，各处理均能抑制潜水蒸发，秸秆深埋整体抑蒸效果和控盐效果均优于土表覆膜，但蒸发结束后，覆膜处理浅层0~30 cm土层土壤的含水率较其他未覆膜处理提高了11.74%~59.91%。【结论】秸秆深埋与覆膜相结合的处理体现了较优的保水控盐效果，可在滨海区农业生产中进行推广应用。 |
| 关键词: 盐渍土； 土壤入渗； 蒸发； 土壤水盐分布； 盐分表聚 |
| DOI：doi： 10.13522/j.cnki.ggps. 20180610 |
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| Incorporating Straw Coupled with Film Mulching to Ameliorate Soil Salinization |
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ZHONG Zhaoyi, ZHANG Yu, FENG Shaoyuan, HUANG Chengzhen, WANG Juan
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School of Hydraulic, Energy and Power Engineering, Yangzhou University, Yangzhou 225009, China
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| Abstract: |
| 【Objective】Movement and accumulation of solute in the proximity of soil surface in spring and autumn could lead to soil salinity in coastal regions, and the objective of this paper is to experimentally study the efficacy of using straw and film mulching to ameliorate this. 【Method】The experiment was conducted in columns packed with saline soil amended with straw; the soil surface was further mulched by plastic film. During the experiment, we measured water infiltration and evaporation, as well as salt movement and accumulation in the soil. 【Result】 Incorporating straw into the deep soil can slow down water infiltration, thereby improving water and salt distribution and facilitating salt leaching. The straw also suppressed evaporation, thus reducing salt movement and accumulation at the soil surface. Film mulching increased soil moisture in 0~30 cm soil by 11.74%~59.91% compared to without mulching treatment. 【Conclusion】Incorporating straw into deep soil coupled with film mulching can improve water conservation in soil and reduce salt accumulation near soil surface; it can be used to improve agricultural production in coastal areas. |
| Key words: salinized soil; soil water infiltration; evaporation; soil salt and water distribution; soil salt accumulation |
