摘要
通过室内土箱试验,对目前国内常用的3种类型滴灌带(管)(单翼迷宫式滴灌带、内镶片式滴灌带及内镶圆柱状滴灌管),分别在内蒙古自治区典型土壤黏壤土、壤土及沙壤土中开展地下滴灌湿润体变化规律研究,得出随流量增大,湿润体先增后减,黏性越高,减小幅度越大;一般不宜采用压力过高、流量过大的滴灌带,黏性大的土壤选大流量滴灌带易使出流受阻,沙性大的土壤选大流量滴灌带易造成深层渗漏,一般宜选择流量小于土壤饱和导水率的滴灌带。
Through laboratory test in soil-box, this paper studied the three types of drip irrigation belt （pipe） （single wing labyrinth drip irrigation belt, the chip drip irrigation belt and the mosaic column emitter type drip irrigation pipe） which was often used in China, the change regulation of subsurface drip irrigation wetting body had been reveal on the typical soil clay loam, loam and sandy loam respectively in Inner Mongolia, concluded that With the flow rate increased, the wetted body first increased and then decreased, the higher the viscosity, the reducing amplitude was greater; It should not be used too high pressure and large flow of drip irrigation belt generaliy, the flow would be blocked in clay soil with large flow drip irrigation belt, the deep layer leakage would be caused in sandy soil with large flow drip irrigation belt, the drip irrigation belt that the flow rate was less than the soil saturated hydraulic conductivity should be choosed generaliy.
出处
《节水灌溉》
北大核心
2017年第11期34-37,共4页
Water Saving Irrigation
基金
内蒙古自治区水利厅项目"地下滴灌适应性及应用技术研究"(201511)
关键词
地下滴灌
湿润体
滴灌带筛选
subsurface drip irrigation
wetting body
selection of drip irrigation belt
