Experimental Study on Water and Solute Movement in Soil Grown with Desert Plant Haloxylon Ammodendron under Drip Irrigation Using Saline Water [典型荒漠植物梭梭在咸水滴灌条件下土壤水盐运移特性]

作者：Liu S.; Yang G.^*; Zhang Q.; He X.; Xue L.; Wang Z.; Li F.; Ren F.

来源：灌溉排水学报, 2020, 39(1): 52-60.

DOI：10.13522/j.cnki.ggps.2019186

• Haloxylon ammodendron
• Hydro-chemical property
• Saline water
• Water and salt migration

【Objective】Saline groundwater in arid and semi-arid regions could be used as an alternative water source to irrigate crops, and understanding its impact on water and solute dynamics in soil is essential to safeguard its use. In this work we present the results of an experimental study on water and solute movement in soil grown with desert plant Haloxylon ammodendron under drip irrigation using saline water.【Method】The experiment was conducted in lysimeters and during the experiment, we measured soil moisture, soil salinity, contents of different ions, and other hydro-chemical propertied of the Haloxylon ammodendron. The data were analyzed using Shukalev method and the piper trigram.【Result】①Soil salt content was positively correlated to the salinity of the irrigating water and accumulated in depth of 60~80 cm with a maxima of 6.1 g/kg. ②The content of SO2-4, Cl-, K+ and Na+ in soil varied significantly as the salinity of the irrigating water increased. After irrigation, the cations in soil changed gradually from Ca2+ dominant to Na+ dominant, anions from SO2-4 dominant to Cl-dominant, and soil water from SO2-4-Ca2+?Mg2+ type to SO2-4 ?Cl--Na+ type.【Conclusion】The movement and distribution of water and solute in soil under drip irrigation using saline water was experimentally studied in lysimeters and the results provide guidance to saline water irrigation management in arid and semi-arid regions.

• 单位
  中国科学院大学; 河海大学; 石河子大学