旱作种植条件下基础地力贡献率演变特征及影响因素分析

李官沫,张文菊,曲潇琳,乔磊,黄亚萍,徐虎,徐明岗

Evolution Characteristics and Influencing Factors on Inherent Soil Productivity Across Dryland

LI GuanMo,ZHANG WenJu,QU XiaoLin,QIAO Lei,HUANG YaPing,XU Hu,XU MingGang

图1 不同区域、时间土壤基础地力贡献率的变化 矩形盒的左右边缘线分别代表全部数据的25%和75%,箱型图的左边缘线和右边缘线分别代表全部数据的5%和95%,左右实心点为除异常值外的最小值和最大值。盒中实线代表中值,虚线代表平均值;右实心点旁的不同字母表示中位值差异显著（P<0.05）,括号数字表示该处理有基础地力贡献率数据的个数。下同

Fig. 1 The contribution percentage of inherent soil productivity after each monitoring sites for different region and periods The lower and upper boundaries,bars,and dots in or outside the boxes indicate 25% and 75%, 5% and 95%, the minimum and maximum besides the vertical outliers of the data. The solid and dashed lines represent the median and mean value. Different letters indicate significant differences (P<0.05) in median mean value. Numbers of observations are shown in parenthesis. The same as below