<van-collapse wx:for="{{studentsMsg}}" wx:key="_id" value="{{activeNames}}" clickable="true" bind:change="onChange">
  <van-collapse-item title="{{item.username}}" name="{{index}}">
    <van-cell-group border="{{false}}">
      <form bindsubmit="save">
      <van-field value="{{item.name}}" label="姓名" name="name" placeholder="请输入姓名" disabled="{{disabled}}" > </van-field>
      <van-field value="{{item.username}}" label="用户名" name="username" placeholder="请输入学号" disabled="{{disabled}}"></van-field>
      <van-field value="{{item.password}}" label="密码" name="password" disabled></van-field>
      <van-field value="{{item.anum}}" label="宿舍楼" type="number" name="anum"  placeholder="请输入数字(整数)" disabled="{{disabled}}" >
      </van-field>
      <van-field value="{{item.dnum}}" label="宿舍号" type="number" name="dnum" placeholder="请输入数字(整数)" disabled="{{disabled}}">
      </van-field>
      <van-field value="{{item.profession}}" label="专业" type="textarea" name="profession" autosize placeholder="请输入专业" disabled="{{disabled}}" >
      </van-field>
      <van-field value="{{item.state}}" label="状态"  name="state"  placeholder="只能为“启用/禁用”" disabled="{{disabled}}" ></van-field>
      <van-button type="primary" size="small" color="#07C160"  bind:click="repairClick" data-idx="{{index}}">修改</van-button>
      <van-button type="primary" size="small" color="#777777"  bind:click="cancel" data-idx="{{index}}">取消</van-button>
      <van-button type="primary" size="small" color="#1989FA"  form-type="submit" data-idx="{{index}}">保存</van-button>
      <van-button type="primary" size="small" color="#EE0A24"  bind:click="deleteClick" data-idx="{{index}}">删除</van-button>
      </form>
    </van-cell-group>
  </van-collapse-item>
</van-collapse>

“专业”的输入类型为texterea，在真机上会盖过其他组件，请问怎么解决