淤土
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淤(yū )泥(ní )沉(chén )淀(diàn )而(ér )成(chéng )的(de )土(tǔ )壤(rǎng )。
《中(zhōng )国(guó )农(nóng )村(cūn )的(de )社(shè )会(huì )主(zhǔ )义(yì )高(gāo )潮(cháo )·沂(yí )乡(xiāng )的(de )全(quán )面(miàn )规(guī )划(huá )》:“地(dì )势(shì )低(dī )洼(wā ),经(jīng )常(cháng )积(jī )水(shuǐ )成(chéng )灾(zāi ),土(tǔ )质(zhì )绝(jué )大(dà )部(bù )分(fèn )是(shì )淤(yū )土(tǔ )。”
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