短語詞組短語soil covered cultivation 覆蓋栽培soil cultivation regime 土壤耕作方法soil moisture conservation cultivation 保墑耕作late soil cultivation 晚期土壤耕作soil cultivation system 土壤耕作制度soil cultivation process 土培法mechanical soil cultivation 土壤機(jī)械化耕作surface soil cultivation 表土耕作fundamental soil cultivation system 基本土壤耕作制 返回 soil cultivation