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塿土
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塿土
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农学
娄土
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tier soil
塿土
自然褐土经过长期耕种熟化,施加大量土粪或富含有机质的农家肥,并由风尘自然沉降而形成的一种人为土壤。在中国第一次全国土壤普查(1959)中命名,在中国土壤分类暂行草案(1978)和第二次全国土壤普查分类(1988)中归入半淋溶土土纲,褐土土类、塿土亚类;在中国土壤系统分类(1991)中,归入人为土纲,旱耕人为土亚纲,塿土土类;在美国土壤系统分类中,相当于新成土;在联合国世界土壤图图例(1988)中,相当于人为土。曾称堆垫褐土。
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water displacing corrosion preventive compound
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water diversion from Wenshui River to Grand Canal
water diversion project
Water Diversion Project at Upper Reaches of Huangpu River
water diversion project from the Yellow River to the canal in ancient China
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water diversion structure of hydropower station
water-diverting agent
waterdivide
water door
water drainage measures for mine
water drainage of concentrators
Water Drainage Standard for Mariculture
water draught gauge
water-drawing permit
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