如图这样的，上面是因为有表头占用了  关键是红框区域怎么去掉呢？求教坛子里的各位大神了

//引入PHPExcel类库
include(ROOT_PATH ."/includes/libraries/PHPExcel.php");
include(ROOT_PATH ."/includes/libraries/PHPExcel/IOFactory.php");

//new一个excel对象
$objPHPExcel = new PHPExcel();

/*以下是一些设置 ，什么作者  标题啊之类的*/
$objPHPExcel->getProperties()->setCreator("admin")
    ->setLastModifiedBy("refund_data")
    ->setTitle("退款数据导出")
    ->setSubject("退款数据导出")
    ->setDescription("退款数据导出")
    ->setKeywords("excel")
    ->setCategory("result file");
$new_refunds=array_values($refunds);

// 表头
$objPHPExcel->setActiveSheetIndex(0)
    ->setCellValue('A1', '下单时间')
    ->setCellValue('B1', '退款时间')
    ->setCellValue('C1', '订单编号')
    ->setCellValue('D1', '仓库')
    ->setCellValue('E1', '商品名称')
    ->setCellValue('F1', '规格')
    ->setCellValue('G1', 'SKU编码')
    ->setCellValue('H1', '数量')
    ->setCellValue('I1', '单价')
    ->setCellValue('J1', '商品总价')
    ->setCellValue('K1', '折扣')
    ->setCellValue('L1', '运费')
    ->setCellValue('M1', '订单总价')
    ->setCellValue('N1', '是否开票')
    ->setCellValue('O1', '开票金额')
    ->setCellValue('P1', '退款编号');


foreach($new_refunds as $k => $v){
//从1开始
$num=$k+2;

//设置活动工作簿
$objPHPExcel->setActiveSheetIndex(0)

//Excel的第A列，下面以此类推
->setCellValue('A'.$num, local_date('Y-m-d H:i:s', $v['add_time'])) //A1 A2
->setCellValue('B'.$num, $v['end_time']?local_date('Y-m-d H:i:s', $v['end_time']):'')
            ->setCellValue('C'.$num, $v['order_sn'])
            ->setCellValue('D'.$num, $v['storage_id'])
            ->setCellValue('E'.$num, $v['goods_name'])
            ->setCellValue('F'.$num, $v['specification'])
            ->setCellValue('G'.$num, $v['sku'])
            ->setCellValue('H'.$num, -$v['quantity'])
            ->setCellValue('I'.$num, $v['price'])
            ->setCellValue('J'.$num, -$v['goods_amount'])
            ->setCellValue('K'.$num, $v['discount'])
            ->setCellValue('L'.$num, -$v['refund_shipping_fee'])
            ->setCellValue('M'.$num, $v['order_amount'])
            ->setCellValue('N'.$num, $this->get_invoice_type($v['invoice_type']))
            ->setCellValue('O'.$num, $v['order_amount'])
            ->setCellValue('P'.$num, " ".$v['refund_sn'])
        ;
    }
//设置活动工作簿的标题
$objPHPExcel->getActiveSheet()->setTitle('refund');
//设置当前工作簿为第一个工作簿
$objPHPExcel->setActiveSheetIndex(0);
//以文件下载的方式输出
header('Content-Type: application/vnd.ms-excel');
header('Content-Disposition: attachment;filename="refund'.date('Y-m-d').'.xls"');
header('Cache-Control: max-age=0');
$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel5');
$objWriter->save('php://output');
exit;

上述是我的代码