Arid Zone Research ›› 2016, Vol. 33 ›› Issue (5): 1110-1118.doi: 10.13866/j.azr.2016.05.27

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Effects of Local Dynamic Change of Groundwater on Soil Salinity in Wasteland under Drip Irrigation in Saline or Alkaline Land of Oasis in Xinjiang

LI Wen-hao1,2, WANG Zhen-hua1,2, ZHENG Xu-rong1,2, ZHANG Jin-zhu1,2   

  1. 1. College of Water Resources & Architectural Engineering,Shihezi University,Shihezi 832000,Xinjiang,China;
    2. Key Laboratory of Modern Water-Saving Irrigation of Xinjiang Corps of Production & Construction,Shihezi University, Shihezi 832000,Xinjiang,China
  • Received:2015-01-08 Revised:2015-12-15 Online:2016-09-15 Published:2025-12-01

Abstract: Groundwater level and salinity in some areas has been improved as drip irrigation is applied in oasis saline or alkaline land in Xinjiang. In this study,the effects of drip irrigation on groundwater level and salinity in wasteland in Xinjiang were explored. The wasteland between the drip irrigation farmland of typical oasis and the native saline or alkaline land in the Xiayedi Irrigated Area in north Xinjiang was taken as the study area to monitor the variation of groundwater level and salinity during the period of 2009-2013. The results revealed that the soil salinity and moisture content in soil layer of 0-140 cm deep in wasteland fluctuated in a periodic“sine or cosine”way from the cotton growth season to freezing-thawing period. Soil salinity was increased in cotton growth season but decreased in the freezing-thawing period. The groundwater level of cotton field was raised due to the influence of drip irrigation,because the transmission path of capillary water was shortened,and the abundant salt sources were increased. The storage of soil salt in soil layer of 0-140 cm in depth was increased by 1 179.05 g·a-1,and the salt composition was mainly dominated by the increase of Ca2+,Cl-,Na+ and Mg2+.

Key words: oasis, saline or alkaline land, drip irrigation, groundwater, salinity, Xinjiang