diff --git a/app/Http/Controllers/DeviceController.php b/app/Http/Controllers/DeviceController.php
index 47c1489..bf4f7f1 100644
--- a/app/Http/Controllers/DeviceController.php
+++ b/app/Http/Controllers/DeviceController.php
@@ -116,11 +116,12 @@ class DeviceController extends Controller
                 $data = $log->toArray();
                 break;
             case DeviceType::Soil://土壤设备
-                //当天
-                $dataList = SoilMonitoringLog::where('device_id', $deviceId)->whereDate('monitored_at', now())->get()->keyBy('monitored_at')->toArray();
+                //当前时间往前推6个小时;
+                $startTime = now()->subHours(6);
+                $dataList = SoilMonitoringLog::where('device_id', $deviceId)->where('monitored_at', '>=', $startTime)->get()->keyBy('monitored_at')->toArray();
                 $data = [];
-                for ($i = 0; $i < 24; $i++) {
-                    $_key = date('Y-m-d').' '.str_pad($i, 2, '0', STR_PAD_LEFT).':00:00';
+                for ($i = 5; $i >= 0; $i--) {
+                    $_key = now()->subHours($i)->format('Y-m-d H').':00:00';
                     $data[$_key] = null;
                     if (isset($dataList[$_key])) {
                         $data[$_key] = $dataList[$_key][$deviceColumn] ?? null;
@@ -129,10 +130,11 @@ class DeviceController extends Controller
                 break;
             case DeviceType::WaterQuality://水质设备
                 //当天
-                $dataList = WaterQualityMonitoringLog::where('device_id', $deviceId)->whereDate('monitored_at', now())->get()->keyBy('monitored_at')->toArray();
+                $startTime = now()->subHours(6);
+                $dataList = WaterQualityMonitoringLog::where('device_id', $deviceId)->where('monitored_at', '>=', $startTime)->get()->keyBy('monitored_at')->toArray();
                 $data = [];
-                for ($i = 0; $i < 24; $i++) {
-                    $_key = date('Y-m-d').' '.str_pad($i, 2, '0', STR_PAD_LEFT).':00:00';
+                for ($i = 5; $i >= 0; $i--) {
+                    $_key = now()->subHours($i)->format('Y-m-d H').':00:00';
                     $data[$_key] = null;
                     if (isset($dataList[$_key])) {
                         $data[$_key] = $dataList[$_key][$deviceColumn] ?? null;
@@ -167,7 +169,8 @@ class DeviceController extends Controller
                 $data = DeviceResource::collection($deviceData);
                 break;
             case DeviceType::Soil->value:
-                $dataList = SoilMonitoringLog::where('agricultural_base_id', $baseId)->whereDate('monitored_at', now())->get()->groupBy('device_id');
+                $startTime = now()->subHours(6);
+                $dataList = SoilMonitoringLog::where('agricultural_base_id', $baseId)->where('monitored_at', '>=', $startTime)->get()->groupBy('device_id');
 
                 foreach ($deviceData as $device) {
                     $_dataList = $dataList->get($device->id);
@@ -175,8 +178,8 @@ class DeviceController extends Controller
                     if ($_dataList) {
                         $_dataList = $_dataList->keyBy('monitored_at')->toArray();
                     }
-                    for ($i = 0; $i < 24; $i++) {
-                        $_key = date('Y-m-d').' '.str_pad($i, 2, '0', STR_PAD_LEFT).':00:00';
+                    for ($i = 5; $i >= 0; $i--) {
+                        $_key = now()->subHours($i)->format('Y-m-d H').':00:00';
                         $data[$device->monitoring_point][$_key] = null;
                         if (isset($_dataList[$_key])) {
                             $data[$device->monitoring_point][$_key] = $_dataList[$_key][$deviceColumn] ?? null;
@@ -185,7 +188,8 @@ class DeviceController extends Controller
                 }
                 break;
             case DeviceType::WaterQuality->value:
-                $dataList = WaterQualityMonitoringLog::where('agricultural_base_id', $baseId)->whereDate('monitored_at', now())->get()->groupBy('device_id');
+                $startTime = now()->subHours(6);
+                $dataList = WaterQualityMonitoringLog::where('agricultural_base_id', $baseId)->where('monitored_at', '>=', $startTime)->get()->groupBy('device_id');
 
                 foreach ($deviceData as $device) {
                     $_dataList = $dataList->get($device->id);
@@ -193,8 +197,8 @@ class DeviceController extends Controller
                     if ($_dataList) {
                         $_dataList = $_dataList->keyBy('monitored_at')->toArray();
                     }
-                    for ($i = 0; $i < 24; $i++) {
-                        $_key = date('Y-m-d').' '.str_pad($i, 2, '0', STR_PAD_LEFT).':00:00';
+                    for ($i = 5; $i >= 0; $i--) {
+                        $_key = now()->subHours($i)->format('Y-m-d H').':00:00';
                         $data[$device->monitoring_point][$_key] = null;
                         if (isset($_dataList[$_key])) {
                             $data[$device->monitoring_point][$_key] = $_dataList[$_key][$deviceColumn] ?? null;