短語(yǔ)詞組短語(yǔ)shallow tilth 淺耘地tilth salinization 耕地鹽堿化tilth depth 耕作深度soil tilth [土壤]土壤耕性;土壤的墑情good tilth 良好耕性fine tilth 精耕tilth soil 適耕土壤 返回 tilth