聊城市典型农业区耕地土壤养分元素地球化学特征

张文强, 李常锁, 刘金鑫, 程诗悦, 滕跃, 李根林

Geochemical characteristics of soil nutrient elements in cultivated land within a typical agricultural area, Liaocheng City, China

ZHANG Wen-Qiang, LI Chang-Suo, LIU Jin-Xin, CHENG Shi-Yue, TENG Yue, LI Gen-Lin

图7 研究区土壤养分元素各等级样品数占比

Fig.7 Proportion of samples of soil nutrient elements at different levels in the study area