ios中select标签第一个无法选中

<select v-model="userDrawBank.provinceName"  @change="selectFn(1)" >
    <option style="display:none" value="" disabled>请选择</option>
    <option :value="item.provinceName" v-for="(item,index) in provinceList" :key="index">{{item.provinceName}}</option>
</select>