markArea的值域大于x轴的值域，是否能让markArea的值域显示出来echarts 柱状配置项内容和展示

markArea的值域大于x轴的值域，是否能让markArea的值域显示出来

      option = {
    tooltip: {
        trigger: 'axis',
        axisPointer: {
            type: 'shadow'
        }
    },
    legend: {
        data: ['深水区', '浅水区']
    },

    xAxis: {
        type: 'value',
        boundaryGap: [0, 0.01],
        splitLine: {
            show: false
        },
    },
    yAxis: {
        type: 'category',
        data: ['06-01', '06-02', '06-03', '06-04'],
        axisTick: {
            alignWithLabel: true
        }
    },
    color: ['rgb(55, 133, 199)', 'rgb(157, 206, 249)'],
    series: [{
        name: '深水区',
        type: 'bar',
        data: [1.5, 0.5, 2, 2.5],
        itemStyle: {
            normal: {
                label: {
                    show: true,
                    position: 'right',
                    formatter: function(params) {
                        if (params.value > 0) {
                            return params.value;
                        } else {
                            return '';
                        }
                    }
                }
            }
        },
        z: 0
    }, {
        name: '浅水区',
        type: 'bar',
        data: [1.5, 0, 2, 2.5],
        itemStyle: {
            normal: {
                label: {
                    show: true,
                    position: 'right',
                    formatter: function(params) {
                        if (params.value > 0) {
                            return params.value;
                        } else {
                            return '';
                        }
                    }
                }
            }
        },
        z: 0,
        markArea: {
            silent: true,
            z: 1,
            itemStyle: {
                normal: {
                    color: 'rgb(254, 202, 197)',
                    opacity: 0.7
                }
            },
            label: {
                normal: {
                    show: true,
                    color: 'rgb(255, 100, 88)',
                }
            },
            data: [
                [{
                    name: '标准值：7.0~7.8',
                    xAxis: '7.0',
                }, {
                    xAxis: '7.8'
                }]
            ]
        }
    }]
};