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农田排水
释
subsurface waterlogging damage
渍害
地下水位过高且历时较长,导致土壤过湿而危害作物生长的灾害。
农学
渍害
释
water logging
渍害
地表长期滞水或遭受地下水浸渍,还原作用强烈,土壤层理化性状恶化,水、热、气和养分失调,影响作物生长或危及作物存活而形成的灾害。其成因可以是降水过多排水不畅,也可以是地下水位(包括上层滞水)过高而导致农田零星积水和土壤水分过饱和。又称涝渍。
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