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本文采用田间观测和数值模拟相结合的方法，对改造后的重盐碱试验地的水盐动态连续三年进行了监测和预报研究。在田间，监测了地下水的水位和矿化度、土壤盐分和水分、降雨和农田蒸散量等参数，同时针对现场试验条件进行数值模拟。在土壤盐分输运模型中，考虑动水不动水概念和吸附作用，在解水分运动方程时采用了更合理的改进型Picard迭代差分法。研究表明，在当前的自然因素和农耕活动中，试验地土壤中的盐分达到动态平衡，不会发生土地重新盐渍化。
In this paper, a combination of field observations and numerical simulation methods were used to monitor and forecast the water and salt dynamics in the reformed saline soil test site for three consecutive years. In the field, the parameters of groundwater level and salinity, soil salinity and moisture, rainfall and farmland evapotranspiration were monitored, and numerical simulations were carried out for field test conditions. In the soil salinity transport model, considering the concept of hydrodynamics and adsorption, a more reasonable and improved Picard iterative difference method is adopted in solving the equations of motion of water. Studies show that in the current natural factors and farming activities, the salt content in the tested soil reaches a dynamic equilibrium and no salinisation of the land will occur.