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| 滴灌条件下种植年限对大田土壤盐分及pH值的影响 | |
| 引用本文： | 谭军利,康跃虎,焦艳平,刘 伟,董 锋.滴灌条件下种植年限对大田土壤盐分及pH值的影响[J].农业工程学报,2009,25(9):43-50. |
| 作者姓名： | 谭军利 康跃虎 焦艳平 刘 伟 董 锋 |
| 作者单位： | 1. 中国科学院地理科学与资源研究所陆地水循环及地表过程重点实验室,北京,100101;宁夏大学土木与水利工程学院,银川,750021 2. 中国科学院地理科学与资源研究所陆地水循环及地表过程重点实验室,北京,100101 3. 宁夏回族自治区农业综合开发办公室,银川,750000 |
| 基金项目： | 中国科学院西部行动计划项目（KZCX2-XB2-13）；中国科学院知识创新工程项目（KSCX2-YW-N-080）；中国科学院百人计划（康跃虎） |
| 摘 要： | 为研究滴灌技术改良盐碱地的可持续性，该文采用田间定位试验和时空转换相结合的方法，研究了在盐碱地上应用滴灌技术种植糯玉米第1、2、3、4年后，土壤含盐量及pH值的变化。结果表明：在玉米生长季内，不同种植年限的地块土壤盐分都得到不同程度地淋洗，土壤含盐量降低幅度在24.7%～43.9%之间，其中在新开垦的地块上降低幅度尤为明显；随着种植年限增加，土壤剖面上的含盐量呈下降趋势，0～60 cm土壤含盐量下降速度快，而60～150 cm下降慢。同时，土壤剖面上pH值也随种植年限的增加呈降低的趋势。总之，在采用滴灌技术1～4 a后，盐碱地土壤含盐量和土壤pH值呈降低趋势。 |
| 关 键 词： | 滴灌，盐碱地，土壤盐分，pH值 |
| 收稿时间： | 2008/4/20 0:00:00 |
| 修稿时间： | 2009/8/14 0:00:00 |
Effects of cropping years on soil salinity and pH value in fields under drip irrigation condition |
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| Tan Junli,Kang Yuehu,Jiao Yanping,Liu Wei and Dong Feng.Effects of cropping years on soil salinity and pH value in fields under drip irrigation condition[J].Transactions of the Chinese Society of Agricultural Engineering,2009,25(9):43-50. | |
| Authors: | Tan Junli Kang Yuehu Jiao Yanping Liu Wei and Dong Feng |
| Institution: | 1. Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; 2. College of Civil Engineer and Water Conservancy, Ningxia University, Yinchuan 750021, China,1. Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China,1. Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China,3. Ningxia Hui Autonomous Region Office of Integrated Agricultural Development Project, Yinchuan 750000, China and 3. Ningxia Hui Autonomous Region Office of Integrated Agricultural Development Project, Yinchuan 750000, China |
| Abstract: | In order to investigate the sustainability of saline-alkali soil improvement with drip irrigation, the authors carried out a field experiment combined with the method of space-time conversion. The research studied the changes of soil salinity and pH value in the first, second, third and fourth year after waxy corn planting in saline-alkali soil using drip irrigation technology. Results showed that soil salt was leached at different extents of the lands with different reclaimed years. The decreasing rate was in the range from 24.7% to 43.9%, and that was particularly evident in the new reclaimed lands. At the same time soil salinity of the 0-150 cm soil profile had a decreasing trend with the increase of reclaimed years. The soil salinity of 0-60 cm reduced more quickly, however, that of 60-150 cm decreased relatively slowly. The pH value of 0-150 cm soil profile had a deceasing trend with the increase of reclaimed years as well. In a word, after one year to four years using drip irrigation technology, soil salinity and pH value are decreased. |
| Keywords: | drip irrigation salt-affected soils soil salinity pH value |
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