el-tree组件懒加载禁用未触发什么原因？

<el-tree
  ref="tree"
  id="fixtree"
  :props="defaultProps"
  node-key="unifiedId"
  :check-on-click-node="true"
  :load="loadNode"
  :filter-node-method="filterNode"
  :check-strictly="true"
  :default-checked-keys="peoples"
  lazy
  @check-change="getChecked">
  <span class="custom-tree-node" slot-scope="{ data, node}">
      <span v-if="data.type === false">
          <img class="organization-img" src="../assets/images/zu.png"  alt="">
          <span>{{ data.name }}</span>
      </span>
      <span v-if="data.type === true">
          <img v-if="data.name" class="organization-img" src="../assets/images/user.png" alt="">
          <span>{{ data.name }}</span>
          <span
          v-if="node.checked && data.name"
          class="el-icon-check SiteTree"
          ></span>
      </span>
      </span>
</el-tree>

defaultProps: {                
    label: 'name',
    children: 'children',              
    disabled: 'choiceStatus', //判断禁用
    isLeaf: 'hasChildren'
},