diff --git a/app/api/controller/DataCollectController.php b/app/api/controller/DataCollectController.php
index 45095d79..f82f829f 100644
--- a/app/api/controller/DataCollectController.php
+++ b/app/api/controller/DataCollectController.php
@@ -22,7 +22,7 @@ class DataCollectController extends BaseApiController
             $land = explode('_', $parmas['username']); // 命名规则：land_id  id土地表主键id
             $device = explode('_', $parmas['topic']); // 命名规则：topic_deviceid  deviceid为设备主键id
             $data = [
-                    'land_id' => $land[1],
+                    'land_id' => $land[3],
                     'topic'=>$device[1],
                     'qos'=>$parmas['qos'],  
                     'wind_speed' => $payload['wind_speed'],