| 冬季咸水结冰灌溉对滨海盐碱地的改良效果研究 |
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| 引用本文： | 郭 凯,张秀梅,李向军,刘小京.冬季咸水结冰灌溉对滨海盐碱地的改良效果研究[J].资源科学,2010,32(3):431-435. |
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| 作者姓名： | 郭 凯 张秀梅 李向军 刘小京 |
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| 作者单位： | 1. 中国科学院农业水资源重点实验室,石家庄,050021;中国科学院遗传与发育生物学研究所农业资源研究中心,石家庄,050021;中国科学院研究生院,北京,100049
2. 中国科学院农业水资源重点实验室,石家庄,050021;中国科学院遗传与发育生物学研究所农业资源研究中心,石家庄,050021 |
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| 基金项目： | 中国科学院知识创新项目，863计划课题，国家科技支撑课题，河北省科技支撑课题 |
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| 摘 要： | 冬季利用地下苦咸水(9.59g/L)对滨海盐碱地进行咸水结冰灌溉,灌溉水量为180mm,咸水融化入渗完成后覆以地膜以防止返盐(T),以不灌溉同期覆膜的地块作为对照1(CK1),以不做任何处理的地块作为对照2(CK2)。种植作物为棉花。结果表明,冬季咸水灌溉结冰、春季咸水冰融化入渗后土壤各层次脱盐效果明显。春季咸水冰融水入渗后,T处理0～20cm土壤表层含盐量由灌水前的0.69%降低到0.39%,脱盐效率为43.5%,显著高于CK1和CK2;而CK1和CK2由于受冬季土壤冻融积盐和春季强烈蒸发影响,0～20cm土壤表层出现强烈的积盐,土壤平均含盐量分别从0.63%和0.58%增加到1.44%和1.27%;在棉花播种期,T处理的土壤表层含盐量为0.31%,而CK1和CK2土壤表层含盐量分别为0.65%和0.98%。由于T处理的土壤含盐量低,适于棉花的播种出苗,播种后出苗率达76.8%,最终籽棉产量达3700.17kg/hm2;而CK1和CK2由于土壤含盐量高,几乎没有棉花出苗,最终棉花绝收。
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| 关 键 词： | 滨海盐土 土壤盐渍化 咸水结冰 盐碱地改良 |
Effect of Freezing Saline Water Irrigation in Winter on the Reclamation of Coastal Saline Soil |
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| GUO Kai,ZHANG Xiumei,LI Xiangjun and LIU Xiaojing.Effect of Freezing Saline Water Irrigation in Winter on the Reclamation of Coastal Saline Soil[J].Resources Science,2010,32(3):431-435. |
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| Authors: | GUO Kai ZHANG Xiumei LI Xiangjun and LIU Xiaojing |
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| Institution: | GUO Kai1,2,3,ZHANG Xiumei1,LI Xiangjun1,LIU Xiaojing1,2 (1. Key Laboratory of Agricultural Water Resources,Center for Agricultural Resources Research,Shijiazhuang 050021,China,2. Institute of Genetics , Developmental Biology,Chinese Academy of Sciences,Shijiazhuang,Hebei 050021,3. Graduate University of Chinese Academy of Science,Beijing 100049,China) |
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| Abstract: | Soil salinization and fresh water shortages are major constraints for crop productions and environmental rehabilitation in coastal plains around the Bohai Sea. Improving saline soils in such areas can greatly benefit agricultural productions and environmental protection in the context of fast economic development across the coastal zones of the Bohai Sea. Based on the mechanism of water desalinization by freezing and thawing processes, a field experiment was designed and conducted to investigate the water a... |
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| Keywords: | Coastal saline soil Soil salinization Freezing saline water irrigation Saline soil reclamation |
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