粘ねん土ど盤ばんMeanings1nounclaypangeologyGeological term for a dense, compacted layer of clay in the subsoil that impedes water drainage.この地ち域いきの粘ねん土ど盤ばんは農のう業ぎょうに適てきさない。The claypan in this area is unsuitable for agriculture.
