gta5 安乐岛:asp access数据库查询中日期的定义搞不明白

我现在弄了个联合查询，有5个条件，其中一个是日期，（例如查询2006-5-2之前的信息）加上这个就不行，其他的都没问题。（老是提示类型不匹配: '[string: "2006-05-02"]'）我把相关的代码贴出来，高手帮帮我
<%
Dim rsb__mmmon1
If (request.form("mon1") <> #0:00:00#) Then
rsb__mmmon1 = request.form("mon1")
End If
%>
if ((rsb__mmnum <> "") or (rsb__mmaname <> "") or (rsb__mmperson <> "") or (rsb__mmtid <> "") or (rsb__mmctid <> "") or (rsb__mmmon1<>#0:00:00#)) then
rsb.Source = "SELECT * FROM t_bargain WHERE b_num like '%" + Replace(rsb__mmnum, "'", "''") + "%' and b_aname like '%" + Replace(rsb__mmaname, "'", "''") + "%' and (b_leader like '%" + Replace(rsb__mmperson, "'", "''") + "%' or b_group like '%" + Replace(rsb__mmperson, "'", "''") + "%' or b_expert like '%" +Replace(rsb__mmperson, "'", "''") + "%') and c_tid like '%" + Replace(rsb__mmctid, "'", "''") + "%'and b_tid like '%" + Replace(rsb__mmtid, "'", "''") + "%' and zhengdate < '#"+rsb__mmmon1+"#' ORDER BY zhengdate asc"
else
rsb.Source = "SELECT * FROM t_bargain ORDER BY b_id DESC"
end if
其他的几个字段的查询运行都没有问题，代码应该不错，关键就是看看时间的那个，mon1，谢谢了