https://www.cnblogs.com/fengliang/archive/2012/08/09/2629907.html
参考：https://stackoverflow.com/questions/52291355/highcharts-different-tick-interval-in-the-same-axis
上面的链接里面的jsfiddle链接打不开，你把代码拷贝到文件里，用你的数据试下
https://www.highcharts.com/ios/demo/spline-irregular-time
