新疆阿拉尔灌区土壤次生盐碱化防治及其相关问题研究

土壤次生盐渍化是制约阿拉尔灌区农业生产发展的关键因子。在阐述产生土壤次生盐碱化的背景条件的基础上,作者以田间水盐平衡模型为依据较深入分析了灌区土壤盐分动态、盐碱化趋势及其效应问题;其次,根据区域水盐平衡理论估算区域尺度上的灌排比并探讨了排水的出路问题;最后,在综合分析的基础上,提出了基于可持续灌溉农业和遏制灌区农业副效应目标下的对策与建议。

Study on Soil Secondary Salinization and Related Issues in Alar Irrigation Area, Xinjiang

Theirrigation area of Alar,located at the upper reaches of Tarim river,is one of the cotton area production and markedly affectedby soil secondary Saline-alkalization.The background and general situation of soil secondary Saline-alkalizationwere firstly expounded and then the primary issues of the irrigation area under current water and soil resources were profoundly analyzed in the light of water and salt equilibrium principle.A series of dynamiccritical depth of groundwater was put forward,the ratios of irrigation and drainage were estimated,and the treatment of drainage was discussed based on the analysis of issues of the irrigation area.The key research topics for addressing the secondary saline-alkalizationinthe irrigation areawere suggested in the end.