王自奎,吴普特,赵西宁,张勇勇,陈小莉,张凤云.模拟垄沟灌溉土壤水分入渗特性试验研究[J].干旱地区农业研究,2011,29(3):24~28
模拟垄沟灌溉土壤水分入渗特性试验研究
Simulation experiment on soil water infiltration characteristics under ridge-furrow irrigation
  
DOI：10.7606/j.issn.1000-7601.2011.03.05
中文关键词:  垄沟灌溉  间(套)作  湿润锋  土壤含水率  沟底覆膜
英文关键词:ridge-furrow irrigation  intercropping  wetting front  soil moisture content  bed film-covering
基金项目:国家自然科学基金(50809055)； 国家科技支撑计划(2011BAD29B09)
作者单位
王自奎 College of Water Resources and Architectural Engineering, NorthuvestA & F University，Yangling ，Shaanxi 712100，China 
吴普特 College of Water Resources and Architectural Engineering, NorthuvestA & F University，Yangling ，Shaanxi 712100，China
National Engineering Research Center for Water Saring Iigation at Yangling， Yangling， Shaanxi 712100，China
Institute of Soil and Water Conseroation， Chinese Acadermy of Science and Ministry of Water Resources，Yangling， Shaanxi 712100， China 
赵西宁 College of Water Resources and Architectural Engineering, NorthuvestA & F University，Yangling ，Shaanxi 712100，China
National Engineering Research Center for Water Saring Iigation at Yangling， Yangling， Shaanxi 712100，China
Institute of Soil and Water Conseroation， Chinese Acadermy of Science and Ministry of Water Resources，Yangling， Shaanxi 712100， China 
张勇勇 Institute of Soil and Water Conseroation， Chinese Acadermy of Science and Ministry of Water Resources，Yangling， Shaanxi 712100， China 
陈小莉 National Engineering Research Center for Water Saring Iigation at Yangling， Yangling， Shaanxi 712100，China 
张凤云 Institute of Soil and Water Conseroation， Chinese Acadermy of Science and Ministry of Water Resources，Yangling， Shaanxi 712100， China 
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中文摘要:
      采用土箱进行模拟垄沟灌溉入渗试验,探索垄沟灌溉条件下土壤水分的入渗特性。研究结果表明:垄沟灌溉入渗时,湿润锋水平方向与垂直方向的运移距离与入渗时间呈幂函数正相关,其垂向运移距离明显大于一般沟灌;灌水时沟中与垄坡剖面的含水率迅速增加,再分布过程中在水平向水势梯度的作用下垄上剖面的含水率也不断增加,适当减小垄宽可以减少灌溉水的深层渗漏损失。沟底覆膜可使垄沟灌溉垂向入渗量减少,灌水后土壤含水率在垄沟之间的分布更加均匀,深层渗漏得到改善。
英文摘要:
      In order to probe the soil water infiltration characteristics for ridge furow irrigation, a field test of ridge furrow intercropping， simulation experiment of ridge furow irrigation was caried out. The results showed that，in ridge- furrow irrigation, vertical and horizontal wetting front migration distance and infiltration time were positively related, and the vertical wetting front migration distance was longer than that in general furrow irrigation ; The soil moisture content in furrow and slope increased rapidly during irmigation, and the soil moisture content in ridge increased slowly after irrigation by the affect of lateral soil water potential ; Moreover, the results also showed that bed film: covering was conducive to soil water lateral infiltration，the vertical infiltration was reduced, soil water distribution was more uniform，and the water seepage decreased obviously compared with no bed covering.
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