In order to prevent soil secondary salinization in inland irrigated area and improve inland rivers quality, wasteland development and its effects were analyzed deeply. Taking land reclamation in upper reaches of Tarim River as a case, the interaction process and mechanism between land reclamation and salinization of Tarim River were revealed and discussed. Firstly, water quality evolution process and characteristics at Alar hydrometric station of Tarim River were analyzed, and the mechanism leading to soil secondary salinization expansion and river salinization was preliminarily revealed based on the comparisons of soil salt status and movement characteristics between the old oasis irrigation districts and new oasis districts; secondly, the influence ofwasteland development on river quality was assessed by the calculation and comparison of leaching requirements for different soil salt contents of wasteland at two stages; finally, some practical and effective countermeasures to improve water quality of Tarim River and to control＂ soil secondary salinization were put forward. Feasible cultivated area scale based on water resources and diversifications of agricultural drainage were the key points to attain the aims above. In addition, dry drainage as a viable alternative was preliminarily discussed. In circumstances where irrigation water is limited and convention drainage is costly, dry drainage will be an attractive choice in the near future.
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