windows+nginx配置站点目录发生500的一个问题

server {
        listen       80;
        server_name  www.cn ;
        root   "F:\\work\\www\\test\_for\_windows";
        location / {
            index  index.html index.htm index.php;
            #autoindex  on;
        }
        location ~ \\.php(.*)$ {
            fastcgi_pass   127.0.0.1:9000;
            fastcgi_index  index.php;
            fastcgi\_split\_path_info  ^((?U).+\\.php)(/?.+)$;
            fastcgi\_param  SCRIPT\_FILENAME  $document\_root$fastcgi\_script_name;
            fastcgi\_param  PATH\_INFO  $fastcgi\_path\_info;
            fastcgi\_param  PATH\_TRANSLATED  $document\_root$fastcgi\_path_info;
            include        fastcgi_params;
        }
}