stat_boxplot(geom="errorbar",width=0.6, position = position_dodge(width=0.9))+ geom_boxplot(width=0.6,outliers = F,lwd=0.5, position = position_dodge(width=0.9)) + 参考: Boxplots in ggplot2 | Carlos I. Rodriguez Spacing between boxplots in ggplot2 in R - GeeksforGeeks发布...