树木为什么到一定高度就不长了

页面:/news/view-3488233/ | 耗时:0.3297 s | 内存:1.89 MB | 查询:4 | 缓存读取:4 写入:0 | 加载文件:23
select * from tbl_Articles WHERE ArticleID=3488233 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=3488233 LIMIT 0,1
select * from tbl_Articles_sphinx where id=3488233 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(857481,999195,861001,916304,539137,645289,361987,2568662,847840,2019910,1044472,781471,1073547,2077933,924780,362315,2564793,2056138,1013654,667489,967540,1432713,2233288,3123144,3391677,544404,1165832,793458,512927,453483) ORDER BY field (ArticleID,857481,999195,861001,916304,539137,645289,361987,2568662,847840,2019910,1044472,781471,1073547,2077933,924780,362315,2564793,2056138,1013654,667489,967540,1432713,2233288,3123144,3391677,544404,1165832,793458,512927,453483)