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滴灌条件下的水盐运移特性是寻求开发利用盐碱地和次生盐碱化防治的基础,国内外学者对此进行大量研究。通过对试验区滴灌灌水后土壤水盐运移特征分析研究表明:土壤含盐量表现为随水移动,各土层含盐量都有所不同垂直方向盐分的积累,在0~80 cm土层逐渐增加,80~120 cm土层盐分积累受滴灌灌水影响较小;水平方向背行中央土层处盐分积累最多,滴头处盐分积累最少。土壤电导与土壤总盐含量呈正相关,土壤pH与土壤含水量有关,土壤含水量高的地方,土壤pH也大。
The characteristics of water and salt transport under drip irrigation are the basis for seeking the development and utilization of saline-alkali land and secondary salinization prevention and control. Many scholars at home and abroad have done a lot of research on this. Through the analysis of the characteristics of soil water and salt transport after drip irrigation in the experimental area, the results show that: the soil salinity showed as the accumulation of salt in the vertical direction with the movement of water and the salinity of each soil layer, The salt accumulation in 80 ~ 120 cm soil layer was less affected by drip irrigation; the salt accumulation was highest in the horizontal central row of soil and the salt accumulation was the least in the drip head. Soil conductance is positively correlated with soil total salt content. Soil pH is related to soil water content. Where soil moisture content is high, soil pH is also large.