通过田间定位试验，研究了水泥硬壳覆盖对盐渍化土壤蒸发、作物蒸腾、土壤盐分变化、作物生长发育状况、产量及水分利用效率的影响。
The effects of concret mulching on evaporation, transpiration, evapotranspiration, soil salt, yields of cotton and corn, water use efficiency were studied by field experiments.
田间土壤水分、盐分和温度变化使水、盐、热耦合迁移的过程极其复杂。
The variation of soil water, salinity and temperature in the field makes the coupled transport processes of them very complicated.
经理论和应用检验证明：该模型能以较高的精度模拟或预报土壤盐分在较长时期内的动态变化过程。
It is proved by theory and practice that this model is of higher precision on simulating and predicting dynamic process of soil soluble salts for a longer period of time.
在灌区内土壤盐分随灌溉和排水而呈现季节性变化，但整体上处于脱盐状态。
In the irrigated areas, the soil salinity changes seasonally and decreases as a whole along with the process of irrigation and drainage.
内蒙古河套灌区地下水位与土壤盐分存在明显的季节性变化，春、秋两季为积盐高峰期。
The ground water level and Salinity of soil in the Hetao irrigated area in the Inner Mongolia exit notable seasonal changes and the peak period of salt deposit occurs in spring and autumn.
根据实测的土壤盐分要素，分析了不同季节土壤盐分含量、电导率及主要离子在土壤剖面中的动态变化及其原因。
According to measured soil salt elements, dynamical changes of soil salt contents, conductivity and dominating ions in soil sections in different seasons were analyzed.
研究了山东寿光设施土壤盐分的变化规律。
Salt in greenhouse soils was studied in Shouguang, Shandong Province.
本发明的输出信号对原位土壤盐分动态变化实时响应，无时间滞后，无测量累积误差；
The output signal of the invention can real-time respond the in situ soil salinity dynamic changes, no lag time, no measuring cumulative error;
水力传导度的变化直接影响土壤剖面的水盐运动，并和土壤溶液的盐分浓度及其组成有很大关系。
Soil hydraulic conductivity is closely related to the movement of water and salts in soil profiles and is highly affected by solution salt concentration and its composition.
揭示了石灰性土壤地区温室土壤盐分积累、离子组成及酸碱度变化规律。
The rule of salinity accumulating, ion constitution and pH in calcareous soil area greenhouse are opened out.
通过室内模拟培养实验，研究了氮、磷、钾肥交互作用对设施土壤盐分含量与离子组成变化的影响。
The effects of interaction among nitrogen, phosphorus and potassium fertilizers on salt content and ion composition in greenhouse were studied through laboratory incubation experiment.
通过土壤含水率、土壤盐分、地下水位的变化与秋浇定额关系的试验研究，确定出切实可行的秋浇定额，实施科学、合理的秋浇制度。
Through experimental researches on the relations between changes of soil moisture, soil salinity, groundwater table and autumn irrigation norm, practical and feasible autumn irrigation norm...
通过土壤含水率、土壤盐分、地下水位的变化与秋浇定额关系的试验研究，确定出切实可行的秋浇定额，实施科学、合理的秋浇制度。
Through experimental researches on the relations between changes of soil moisture, soil salinity, groundwater table and autumn irrigation norm, practical and feasible autumn irrigation norm...
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