solr dismax，

http://wiki.apache.org/solr/SolrQuerySyntax

Please note that many characters in the Solr Query Syntax (most notable the plus sign: "+ ") are special characters in URLs, so when constructing request URLs manually, you must properly URL-Encode these characters.

                                               q=  +popularity:[10   TO   *]     +section:0

   http://localhost:8983/solr/select?q=%2Bpopularity:[10%20TO%20*]%20%2Bsection:0

DisMaxQParserPlugin

http://localhost:8983/solr/select/?q=video&qt=defType=dismax&qf=features^20.0+text^0.3

http://localhost:8983/solr/select/?q=video&defType=dismax&qf=features^20.0+text^0.3&bq=cat:electronics^5.0