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如何判断土壤含水量

更新时间: 2020-07-01 00:00:00     

1、用土钻取有代表性的新鲜土样,将土钻中部所需深度处的土壤约20克,捏碎后迅速装入已知准确质量的大型铝盒内,盖紧,装入木箱或其他容器,带回室内,将铝盒外表擦拭干净,立即称重,尽早测定水分;

2、将盛有新鲜土样的大型铝盒在天平上称重;

3、揭开盒盖,放在盒底下,置于已预热至105摄氏度左右的烘烤箱中烘烤;

4、取出,盖好,在干燥器中冷却至室温,再次进行称重;

5、可得到含水土壤和不含水土壤的质量,两者之差便是土壤中所含水分;

6、所含水分与干

关键词: 如何 判断 土壤 含水量

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