<a-row>
                      <a-col :span="12">
                        <a-form-model-item label="开始日期" :label-col="{span:8}" :wrapper-col="{span:14}" prop="tzgg0112">
                          <template v-if="!readOnly">
                            <a-date-picker  @change="onChangeStartDate">
                              <a-icon slot="suffixIcon" type="calendar" />
                            </a-date-picker>
                          </template>
                          <span v-else>{{ formInfo.tzgg0112}}</span>
                        </a-form-model-item>
                      </a-col>
                      <a-col :span="12">
                        <a-form-model-item label="结束日期" :label-col="{span:6}" :wrapper-col="{span:14}" prop="tzgg0113">
                          <template v-if="!readOnly">
                            <a-date-picker @change="onChangEndDate">
                              <a-icon slot="suffixIcon" type="calendar" />
                            </a-date-picker>
                          </template>
                          <span v-else>{{ formInfo.tzgg0112}}</span>
                        </a-form-model-item>
                      </a-col>
                    </a-row>

 data () {
   const validateStartTime = (rule, value, callback) => {
      const startTime = value
      const endTime = this.formInfo.tzgg0113
      if (!value) return callback(new Error('采集开始时间不能为空'))
      if (!endTime) callback()
      if (startTime && endTime) {
        const startDate = new Date(startTime)
        const endDate = new Date(endTime)
        if (startDate > endDate) {
          return callback(new Error('采集开始时间不能晚于采集结束时间'))
        }
      }
      callback()
    }

    const validateEndTime = (rule, value, callback) => {
      const startTime = this.formInfo.tzgg0112
      const endTime = value
      if (!value) return callback(new Error('采集结束时间不能为空'))
      if (!startTime) callback()
      if (startTime && endTime) {
        const startDate = new Date(startTime)
        const endDate = new Date(endTime)
        if (endDate < startDate) {
          return callback(new Error('采集结束时间不能早于采集开始时间'))
        }
      }
      callback()
    }

 rules: {
		  ...
        tzgg0112: [{
          validator: validateStartTime,
          required: true,
          trigger: ['change', 'blur']

        }],
        tzgg0113: [{
          validator: validateEndTime,
          required: true,
          trigger: ['change', 'blur']
        }]

      },