Addressing soil acidity: subsurface soil amendments increasing pH and crop yield at Rutherglen

To quantify the yield limitation caused by subsoil acidity and evaluate innovative soil amendments that act to ameliorate subsurface acidity.旨在量化底土酸度（subsoil acidity）所引发的产量限制，并评估用于改良亚表层酸度（subsurface acidity）的创新型土壤改良剂（soil amendments）。