从apache到nginx：wordpress重写规则

我正在从apache2迁移到nginx.我无法弄清楚如何重写wordpress的重写规则.

这实际上是我的配置文件

server {
        listen 80;    
        root /usr/share/nginx/blog.com/public_html;
        index index.html index.htm index.php;

        server_name blog.com www.blog.com;

        location / {
                try_files $uri $uri/ /index.html;

        }

        location /doc/ {
                alias /usr/share/doc/;
                autoindex on;
                allow 127.0.0.1;
                allow ::1;
                deny all;
        }

        location ~ .php${
                fastcgi_pass 127.0.0.1:9000;

                fastcgi_param  SCRIPT_FILENAME /usr/share/nginx/blog.com/public_html$fastcgi_script_name;
                fastcgi_index index.php;
                include fastcgi_params;
        }

}

我正在使用php5-fpm.

这是我想补充的规则：

# BEGIN WordPress

    location /blog {
            try_files $uri $uri/ /blog/index.php?$args;
    }

    location ~ .php${
            fastcgi_split_path_info ^(/blog)(/.*)$;
    }