Effect of population distribution on yield and water use efficiency in summer soybean Water Consumption of Single-Tree from the Main Afforestation Species in Western Shanxi of Loess Area Study on the Sandy Land Water Dynamics in Yanchi County of Ningxia Studies on Soil Water Characteristic Curves and Infiltration Capability of Maowusu Sandy Soil Effects of planting patterns on water use efficiency in winter wheat Study on Water-Holding Capacity of the Top Soil of a Steppe Reserve in the Yunwu Mountains, Guyuan, Ningxia Hui Autonomous Region Study on Soil Capacities of Water-retention on Typical Vegetations in the North Side of Liupan Mountains in Ningxia SOIL WATER HOLDING CAPACITY AND SOIL AVAILABLE WATER IN PLANTATIONS IN THE LOESS REGION Study on Water-retention Characters of Maowusu Sandy Soil