增加判定字段的值

application/admin/controller/Entrust.php

@@ -332,9 +332,6 @@ class Entrust extends Backend
             }
             if ($value['chemical_compound'] == '苯'){//苯含量
                 $ben = $value['potency'];
-                if ($ben == '-'){
-                    $ben = 0;
-                }
             }
             if (in_array($value['chemical_compound'],$dis_impurity_arr)){//溶剂杂质总量
                 $dis_impurity_data[$value['chemical_compound']] = $value['potency'];