Adjust rice transplant plan to store installed box counts

backend/apps/plans/models.py

@@ -97,10 +97,10 @@ class RiceTransplantEntry(models.Model):
         related_name='rice_transplant_entries',
         verbose_name='圃場',
     )
-    seedling_boxes_per_tan = models.DecimalField(
-        max_digits=6,
+    installed_seedling_boxes = models.DecimalField(
+        max_digits=8,
         decimal_places=2,
-        verbose_name='反当苗箱枚数',
+        verbose_name='設置苗箱枚数',
     )
     seed_grams_per_box = models.DecimalField(
         max_digits=8,
@@ -115,4 +115,4 @@ class RiceTransplantEntry(models.Model):
         ordering = ['field__display_order', 'field__id']
 
     def __str__(self):
-        return f'{self.plan} / {self.field} / {self.seedling_boxes_per_tan}枚/反'
+        return f'{self.plan} / {self.field} / {self.installed_seedling_boxes}枚'