间接地下滴灌水盐运移影响因素研究

为研究不同灌溉要素对间接地下滴灌土壤水盐运移的影响规律，通过小区试验，分析流量、灌水量及导水装置直径对间接地下滴灌条件下枣树根区水盐分布的影响。结果表明：增大流量或减小导水装置直径会使土壤表层的含水率提高；大灌水量、小流量会加大水分向下运移的深度；灌水量的增加显著增大主要根区含水率；流量、导水装置直径对水分的横向运移影响比灌水量更显著。

Study of influence factors on water and salt movement under indirect subsurface drip irrigation

To study the influence of different factors on salt and water movement under indirect subsurface drip irrigation， the present study was conducted to investigate the effect of different dripper discharge and irrigation quantity and water conducting device diameter on water salt distribution in root zone by analysis of variance. It was shown that the increase of dripper discharge and decrease of water conducting device diameter could increase soil moisture content. Large irrigation quantity with small dripper discharge would increase the depth of water downward migration. The increase of irrigation quantity would significantly increase moisture content in main root zone. The influences of water conducting device diameter and dripper discharge were more significant on lateral migration than that of irrigation water.