diff --git a/app/Console/Commands/LinkosDeviceLogArchiveCommand.php b/app/Console/Commands/LinkosDeviceLogArchiveCommand.php
index 912c770..144fbed 100644
--- a/app/Console/Commands/LinkosDeviceLogArchiveCommand.php
+++ b/app/Console/Commands/LinkosDeviceLogArchiveCommand.php
@@ -46,9 +46,9 @@ class LinkosDeviceLogArchiveCommand extends Command
                 }
 
                 match ($device->type) {
-                    DeviceType::Soil => $linkosDeviceLogService->handleSoilDeviceData($device, $log->data, $log->reported_at),
+                    DeviceType::Soil => $linkosDeviceLogService->handleSoilMonitoringLog($device, $log->data, $log->reported_at),
                     DeviceType::Meteorological => $linkosDeviceLogService->handleMeteorologicalDeviceData($device, $log->data, $log->reported_at),
-                    DeviceType::WaterQuality => $linkosDeviceLogService->handleWaterQualityDeviceData($device, $log->data, $log->reported_at),
+                    DeviceType::WaterQuality => $linkosDeviceLogService->handleWaterQualityMonitoringLog($device, $log->data, $log->reported_at),
                 };
             }
         });
diff --git a/app/Models/SoilMonitoringDailyLog.php b/app/Models/SoilMonitoringDailyLog.php
new file mode 100644
index 0000000..05b6e0a
--- /dev/null
+++ b/app/Models/SoilMonitoringDailyLog.php
@@ -0,0 +1,27 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class SoilMonitoringDailyLog extends Model
+{
+    use HasFactory;
+
+    protected $casts = [
+        'monitored_at' => 'date',
+    ];
+
+    protected $fillable = [
+        'device_id',
+        'agricultural_base_id',
+        'conductivity',
+        'humidity',
+        'temperature',
+        'n',
+        'p',
+        'k',
+        'monitored_at',
+    ];
+}
diff --git a/app/Models/WaterQualityMonitoringDailyLog.php b/app/Models/WaterQualityMonitoringDailyLog.php
index 493361f..8ae8442 100644
--- a/app/Models/WaterQualityMonitoringDailyLog.php
+++ b/app/Models/WaterQualityMonitoringDailyLog.php
@@ -10,7 +10,7 @@ class WaterQualityMonitoringDailyLog extends Model
     use HasFactory;
 
     protected $casts = [
-        'monitored_at' => 'datetime',
+        'monitored_at' => 'date',
     ];
 
     protected $fillable = [
diff --git a/app/Services/LinkosDeviceLogService.php b/app/Services/LinkosDeviceLogService.php
index 6583055..125335d 100644
--- a/app/Services/LinkosDeviceLogService.php
+++ b/app/Services/LinkosDeviceLogService.php
@@ -7,6 +7,7 @@ use App\Exceptions\BizException;
 use App\Models\Device;
 use App\Models\LinkosDeviceLog;
 use App\Models\MeteorologicalMonitoringLog;
+use App\Models\SoilMonitoringDailyLog;
 use App\Models\SoilMonitoringLog;
 use App\Models\WaterQualityMonitoringDailyLog;
 use App\Models\WaterQualityMonitoringLog;
@@ -98,6 +99,8 @@ class LinkosDeviceLogService
             foreach ($devices as $device) {
                 switch ($device->type) {
                     case DeviceType::Soil:
+                        $this->handleSoilMonitoringLog($device, $log->data, $log->reported_at);
+                        $this->handleSoilMonitoringDailyLog($device, $log->reported_at);
                         break;
 
                     case DeviceType::Meteorological:
@@ -115,14 +118,14 @@ class LinkosDeviceLogService
     }
 
     /**
-     * 处理土壤设备数据
+     * 处理土壤监测数据
      *
      * @param  \App\Models\Device  $device
      * @param  array  $data
      * @param  \Carbon\Carbon  $reportedAt
      * @return void
      */
-    public function handleSoilDeviceData(Device $device, array $data, Carbon $reportedAt): void
+    public function handleSoilMonitoringLog(Device $device, array $data, Carbon $reportedAt): void
     {
         if (! Arr::hasAny($data, $this->soilMonitoringFields)) {
             return;
@@ -146,6 +149,55 @@ class LinkosDeviceLogService
         $log->save();
     }
 
+    /**
+     * 按天处理土壤监测数据
+     *
+     * @param  \App\Models\Device  $device
+     * @param  \Carbon\Carbon  $date
+     * @return void
+     */
+    public function handleSoilMonitoringDailyLog(Device $device, Carbon $date)
+    {
+        $logs = SoilMonitoringLog::query()
+            ->where('device_id', $device->id)
+            ->whereBetween('monitored_at', [$date->copy()->startOfDay(), $date->copy()->endOfDay()])
+            ->oldest('monitored_at')
+            ->get();
+
+        if ($logs->isEmpty()) {
+            return;
+        }
+
+        $data = [];
+
+        foreach ($logs as $log) {
+            foreach (['conductivity', 'humidity', 'temperature', 'n', 'p', 'k'] as $key) {
+                if (! is_null($v = $log->{$key})) {
+                    continue;
+                }
+
+                $item = $data[$key] ?? ['sum' => 0, 'count' => 0];
+                $item['sum'] = bcadd($item['sum'], $v, 2);
+                $item['count']++;
+
+                $data[$key] = $item;
+            }
+        }
+
+        $dailyLog = SoilMonitoringDailyLog::firstOrCreate([
+            'device_id' => $device->id,
+            'monitored_at' => $date,
+        ], [
+            'agricultural_base_id' => $device->agricultural_base_id,
+        ]);
+
+        foreach ($data as $key => $item) {
+            $dailyLog->{$key} = round(bcmul($item['sum'], $item['count'], 2), 2);
+        }
+
+        $dailyLog->save();
+    }
+
     /**
      * 处理气象设备数据
      *
diff --git a/database/migrations/2022_10_24_114148_create_soil_monitoring_daily_logs_table.php b/database/migrations/2022_10_24_114148_create_soil_monitoring_daily_logs_table.php
new file mode 100644
index 0000000..b8d54ff
--- /dev/null
+++ b/database/migrations/2022_10_24_114148_create_soil_monitoring_daily_logs_table.php
@@ -0,0 +1,43 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('soil_monitoring_daily_logs', function (Blueprint $table) {
+            $table->id();
+            $table->unsignedBigInteger('device_id')->comment('设备ID');
+            $table->unsignedBigInteger('agricultural_base_id')->comment('农业基地ID');
+            $table->decimal('conductivity', 8, 2)->nullable()->comment('电导率 (单位: us/cm)');
+            $table->decimal('humidity', 8, 2)->nullable()->comment('湿度 (单位: %RH)');
+            $table->decimal('temperature', 8, 2)->nullable()->comment('温度 (单位: ℃)');
+            $table->decimal('n', 8, 2)->nullable()->comment('氮 (单位: mg/kg)');
+            $table->decimal('p', 8, 2)->nullable()->comment('磷 (单位: mg/kg)');
+            $table->decimal('k', 8, 2)->nullable()->comment('钾 (单位: mg/kg)');
+            $table->date('monitored_at')->comment('监控日期');
+            $table->timestamps();
+
+            $table->index('agricultural_base_id');
+            $table->unique(['device_id', 'monitored_at']);
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('soil_monitoring_daily_logs');
+    }
+};