Angular2 primeNG的p-dropdown的选中值未初始化

<p-dropdown name="adjustflagId" class="dp-position" [options]="codeTable.adjustAccountFlag"
            [(ngModel)]="editObj.adjustflagId" [style]="{'width': '124px'}" required></p-dropdown>
<p-dropdown name="adjustflagId" class="dp-position" [options]="codeTable.nameArr"
            [(ngModel)]="editObj.name" [style]="{'width': '124px'}" required></p-dropdown>

代码复制的，name属性相同所致。