研究提出了一种将盐碱地原土进行淡化、原位植树绿化的新技术方法。该方法是依据半透膜的单向渗透功能实现的,用半透膜管构建成连续供水系统,连续水流携带盐分不停地向远离根区方向单向运移,最后移至根区之外,在湿润锋处富集,变成无盐害。该过程同时使湿润体内部的土壤淡化,使根区附近土壤含盐量降至正常土壤水平,实现原位淡化,局部淡化处可用于种植乔木、灌木或花丛,实现盐碱地绿化。其主要技术特点是淡化后的土体可永不返盐。该方法在解决了盐碱地利用的同时,也完成了节水灌溉。 A new method of desalting native saline soil and in situ afforestation was put forward. The method is based on the semi-permeable membrane unidirectional permeation function, with semipermeable membrane tube into a continuous water supply system, continuous water flow carrying salt to move away from the root direction of the unidirectional migration, and finally moved to the root zone , Enriched at the wet front, becoming salt-free. In the process, the soil inside the wetting body is also desalinated, the soil salinity near the root zone is reduced to the normal soil level, and the soil is desalted in situ. Local desalination can be used for planting trees, shrubs or flowers to achieve the greening of saline-alkali soil. Its main technical feature is the desalinated soil can never return to salt. The method not only solves the problem of using saline soil but also completes water-saving irrigation.