中国科学院士壤研究所于1951年秋,在江西南昌西40里甘家山建立红壤试验场。该地土壤是发育在第四纪红色粘土上的红壤,有大面积荒地,植被破坏程度严重,现仅生长白茅、蜈蚣草等禾本科矮草及零星残留的小灌木。土壤质地粘重,土壤反应酸性,在pH 4.5—5.5之间;养分含量很低,表层土壤有机质含量1%左右,合N0.09%,含 Soil Science Institute of Chinese Academy of Sciences in the autumn of 1951, in Jiangxi Nanchang West 40 Ganjiaoshan red soil test site. The soil is a red soil developed on the Quaternary red clay. There are a large area of ​​wasteland and the degree of vegetation damage is serious. Now only grass, weeds and centipede grass and other small shrubs are scattered. Soil texture sticky, soil reaction acidity, pH 4.5-5.5; nutrient content is very low, the surface soil organic matter content of about 1%, combined N0.09%, containing