This book focuses on the soil drying of jujube forests in the loess hills, and systematically explains the soil drying characteristics of jujube forests in the loess hills, and proposes a method for soil drying of jujube forests in the loess hills through a large number of scientific experiments.The spatial and temporal changes of soil properties of dry jujube forests are described, the relationship between jujube forest root system and soil moisture is analyzed, the moisture migration characteristics of dry soil under exposed surfaces are studied, and the moisture replenishment of dry soil moisture is discussed.Through the simulation experiment of large soil columns, the water recovery ability of dry soil in jujube trees during the growth period under different physical and biological treatments of large soil columns was discussed. The impact of different dry crop technologies and dry crop and water-saving irrigation technology on soil temperature, evaporation, soil moisture and yield on jujube forests was compared and analyzed. The impact of two measures individually and combined on soil moisture, jujube trees transpiration, growth and yield was discussed in the first place. The problem of replanting jujube trees in dry soil was analyzed.