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通过“中国知网”检索2011年发表的主题为“土壤深度”的论文，选择其中90篇查阅并下载图的标曰为“土壤深度”及其含义的41篇论文进行图形式样调查统计，以探讨此类图形的正确、规范表达模式。结果显示：有34篇用曲线图，且曲线图出现7种不同的表达形式。对各曲线图式样以及图中标目的量与单位表达的谬误辨析结果表明，有关土壤特征指标曲线图的准确、规范表达模式为：以“土壤深度”为横标目（自变量），土壤特征指标为纵标目（因变量）且纵坐标轴向上，标值均为正数，标值增量方向与坐标轴方向一致，标值线向内。“,”Papers published in 2011 with a topic of ＂ soil depth＂ were retrieved at www. cnki. net and 90 papers were screened and looked up. Of the 90 papers, 41 papers whose diagram titles involve ＂ soil depth＂ were downloaded and their diagrams were statistically examined in order to find out correct and standard expression forms of diagrams of such kinds. It is found out that seven papers adopt histogram diagrams, 34 papers use curve diagrams, and there are seven different expression forms for the curve diagrams. After examining errors on the curve diagrams, we suggest that, for correct and standard diagram subheadings, ＂ soil depth＂ should be taken as the horizontal subheading （independent variable） and soil property indicators as the vertical subheadings （dependent variables） ; the axes of ordinates should point upward and their values be positive; the increment of values should be in the same direction as the axes and the marker lines be inward.