Effects of polycoated urea and subsoiling on nitrogen transformation and utilization in a maize field Effects of Subsoiling-Seeding on Root Physiological Indices, Water-Saving and Yield-Increasing Behaviors in Summer Maize (Zea mays L.) in Haihe Lowland Plain Effect of Strip Subsoiling on Population Root Spatial Distribution of Maize under Different Planting Densities Effects of subsoiling and N fertilizer application on dry matter accumulation, nitrogen use efficiency and yield of summer maize Ecological effect of subsoiling high stubble on the winter wheat in sloping land of western Henan Effects of subsoiling and supplemental irrigation on dry matter production and water use efficiency in wheat Effeet of subsoiling on crop yield in semi-arid area of west Liaoning and its mechanism Influences of micro-irrigation and subsoiling before planting on enzyme activity in soil rhizosphere and summer maize yield. Effect of Subsoiling in Fallow Period and Nitrogen Application on Soil Moisture and Grain Protein Accumulation in Dryland Wheat Effects of Farming Practice during Fallow Period on Soil Water Storage and Yield of Dryland Wheat in Different Rainfall Years