| 咸水结冰灌溉对盐化潮土盐基离子剖面迁移规律的影响 |
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| 引用本文： | 车升国,林治安,赵秉强,左余宝,夏雪.咸水结冰灌溉对盐化潮土盐基离子剖面迁移规律的影响[J].水土保持学报,2011,25(4):88-93. |
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| 作者姓名： | 车升国 林治安 赵秉强 左余宝 夏雪 |
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| 作者单位： | 1. 中国农业科学院农业资源与农业区划研究所,北京,100081
2. 山东东明县农业局,山东东明,274500 |
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| 基金项目： | 公益性行业(农业)科研专项(200903001); 中央级公益性科研院所基本科研业务费专项(2011-26) |
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| 摘 要： | 利用土柱模拟试验,设置淡水、咸水灌溉、咸水结冰和咸水结冰覆盖4个灌溉方式,研究咸水结冰灌溉条件下盐分运移及盐基离子Cl^-、SO4^2-、HCO^3-、Na^＋、Mg^2＋、K^＋和Ca^2＋的土层剖面迁移规律。结果表明：咸水直接浇灌使各土层土壤盐度提高,且盐分具有明显表层聚集特性,而咸水结冰后灌溉则显著降低表层0-40 cm土层的盐分盐度,配合秸秆覆盖措施则使表层的脱盐率进一步提高,特别是0-10 cm土层,土壤盐度仅为0.15 dS/m,与淡水处理尚未达显著性差异（P〉0.05）。咸水结冰灌溉显著改变盐基离子Cl^-、SO4^2-、HCO^3-、Na^＋、Mg^2＋、K^＋和Ca^2＋的土壤剖面分布特征,但不同离子的响应方式和影响程度存在差异。咸水结冰灌溉显著（P〈0.05）降低表层危害性较高的Na^＋、SO4^2-和Cl^-浓度,而对危害性较小的Mg2＋、K＋和Ca2＋则影响较小。咸水结冰灌溉可促进表层土壤的脱盐作用,淋洗主要危害性离子Na^＋、Cl^-等,保持土壤根系分布密集层较低盐分水平和盐基离子平衡,缓解或消除盐分和盐基离子对作物生长的危害,配合秸秆覆盖则效果更加明显。
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| 关 键 词： | 土壤盐分 离子 咸水灌溉 咸水结冰灌溉 秸秆覆盖 |
Effects of Agricultural Irrigation by Melting Saline Water Ice on Soil Salt and Ion Movement Under Fluvo-Aquic Soils |
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| CHE Sheng-guo,LIN Zhi-an,ZHAO Bing-qiang,ZUO Yu-bao,XIA Xue.Effects of Agricultural Irrigation by Melting Saline Water Ice on Soil Salt and Ion Movement Under Fluvo-Aquic Soils[J].Journal of Soil and Water Conservation,2011,25(4):88-93. |
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| Authors: | CHE Sheng-guo LIN Zhi-an ZHAO Bing-qiang ZUO Yu-bao XIA Xue |
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| Institution: | CHE Sheng-guo1,LIN Zhi-an1,ZHAO Bing-qiang1,ZUO Yu-bao1,XIA Xue2(1.Institute of Agricultural Resources and Regional Planning,Chinese Academy of Agricultural Sciences,Beijing 100081,2.Dongming Agricultural Bureau of Shandong Province,Dongming,Shandong 274500) |
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| Abstract: | The control treatment(irrigation with fresh water,CK),irrigation with saline water(SW),irrigation with saline water ice(MI),and irrigation with saline water ice and wheat straw mulch(MI+SW) was conducted to study the mechanism of soil water,salt and ion movement using soil column modeling experiment based on the melting process.The results showed that compared to irrigation with fresh water,soil salinity was more under the saline water treatment with the salt aggregation in the surface.However,irrigation wi... |
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| Keywords: | soil salt ions irrigation with saline water irrigation with saline water ice wheat straw mulch |
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