diff --git a/database/seeders/CropYieldSeeder.php b/database/seeders/CropYieldSeeder.php
index f5d596d..e0c9223 100644
--- a/database/seeders/CropYieldSeeder.php
+++ b/database/seeders/CropYieldSeeder.php
@@ -19,6 +19,7 @@ class CropYieldSeeder extends Seeder
     {
         $type = 2;
 
+        //假数据逻辑：每个地区，每年随机一种农作物，4个季度随机值；
         $bases = AgriculturalBase::where('type', $type)->get();
         foreach ($bases as $base){
             for ($i = 2019; $i < 2023; $i++) {