织梦在导航栏下拉菜单中怎么调用当前栏目子类

<ul>
    {dede:channelartlist typeid='@self' row='10' currentstyle='class="current";'}
        <li><a href="[field:typeurl/]" class="[field:currentstyle/]">{if @me != 1}[field:typename/]{else}首页{/if}</a></li>
    {/dede:channelartlist}
    {dede:channel type='son' currentstyle='class="current";' row='10' id='@me'}
        <li><a href="[field:typeurl/]" class="[field:currentstyle/]">{if @me != 1}[field:typename/]{else}首页{/if}</a></li>
    {/dede:channel}
</ul>

<nav>
    <ul>
        <!-- 调用当前栏目的信息 -->
        {dede:channel typeid='@self' row='1'}
            <li class="dropdown">
                <a href="[field:typeurl/]" class="[field:currentstyle/]">
                    [field:typename/]
                    <span class="caret"></span>
                </a>
                <!-- 如果有子类，则显示下拉菜单 -->
                {if $dsql->GetOne("SELECT COUNT(*) FROM `#@__arctype` WHERE pid='@me'") > 0}
                <ul class="dropdown-menu">
                    <!-- 调用当前栏目的子类 -->
                    {dede:channel type='son' row='10' id='@me'}
                        <li><a href="[field:typeurl/]">[field:typename/]</a></li>
                    {/dede:channel}
                </ul>
                {/if}
            </li>
        {/dede:channel}
    </ul>
</nav>