典型岩溶地质高背景土壤镉生物有效性及其控制因素研究
郭超,文宇博,杨忠芳,李伟,管冬兴,季峻峰

Factors controlling the bioavailability of soil cadmium in typical karst areas with high geogenic background
Chao Guo,Yubo Wen,Zhongfang Yang,Wei Li,Dongxing Guan,Junfeng Ji
图7 土壤pH与Cd氯化钙提取率间的相关图
Fig.7 Correlation diagram of Cd extraction rate by CaCl2 and soil pH