shi yan she ji(shu xue) Shi yan she ji(shu xue) shi yan fen xi(shu xue) Nong ye- shi yan she ji(shu xue) nong ye- shi yan she ji(shu xue) shi yan she ji(shu xue)- nong ye shi yan you ji hua xue/ shi yong mi shu xue/ shi yan xin li xue shi nei she ji- chu fang