南疆苹果园畦灌条件下水盐运移规律的试验研究

Migration of Soil Water and Salt in Apple Orchards of South Xinjiang under Border Irrigation

研究了不同灌水量条件下苹果园不同土壤剖面中水盐运移变化规律。结果表明，生育期内20～80cm土壤含水率随着灌水量的增加而增大，并于剖面80cm处最大；土壤电导率随土壤加深而逐渐增大，并在土壤剖面80cm处达到峰值。各处理不同土壤剖面电导率变化与含水率基本一致，在含水率最大值附近形成一个盐分积累区。

Migration of soil water and salt in apple orchards of South Xinjiang was studied to determine rea- sonable irrigation quota and provide theoretical basis and technical parameters. The results showed that： with the increase of irrigation amount, the soil moisture content in the growth period increased in the pro- files from 20 to 80 era, and the top of soil water content appeared in the depth of 80 cm;the soil conductivity increased with the soil depth and the top existed in the profile of 80 cm; there was positive correlation between soil conductivity and soil moisture in different conditons, and salt accumulation area was formed near maximum moisture content.