Research on soil physical characteristics and dynamic response of groundwater to irrigation in typical irrigation area of Huangshui River Basin

Abstract Under the influence of natural and human factors, water table irrigated area Changes frequently, but it is mainly affected by irrigation infiltration replenishment. Basic physical properties different soil layer typical field were determined analyzed, 5 groundwater observation wells constructed to carry out experiment response irrigation. The results showed that upper vertical 0-40 cm loose, 40-60 relatively tight, lower part 60-200 tend loose again. Soil saturated holding capacity, capillary capacity increased first then decreased trend with increase depth. They almost same nearly evenly spaced degressive trend. stage dynamic change rule spring seedling in plot was fit hydrological geology condition grade-Iterrace Huangshui river valley. Lateral canal direction formed a line effect. rangeability period significantly higher than period.