短語詞組短語soil diagnostic horizon 土壤診斷層soil genetic horizon [土壤]土壤發(fā)生層;土壤發(fā)生學(xué)層次soil plough horizon 土壤耕層soil genetic horizon soil horizon 土壤發(fā)生層effecive soil horizon 土層soil and soil horizon 土壤和土壤層effective soil horizon 有效土層buried soil horizon [土壤]埋藏土層symbol of soil horizon 土壤層位標(biāo)示記號(hào) 返回 soil horizon