本研究主要探讨南亚热带半干燥蔗医碳酸盐土壤养分的动态变化及土壤有效养分与甘蔗产量的相关性等问题,为合理施肥提供理论依据。 The main purpose of this study is to investigate the dynamic changes of nutrients in semi-dry sugarcane soils and the correlation between soil available nutrients and sugar cane yield in southern subtropical China so as to provide a theoretical basis for rational fertilization.