用如下方法可以实现了！
[e:loop={'news',10,18,0,'newstime>='.to_time('2010-11-11 00:00:01').' and newstime<='.to_time('2010-11-11 23:59:59')}]<a href="<?=$bqsr[titleurl]?>" target="_blank"><?=$bqr[title]?></a><br>[/e:loop]
